A medium cyan, black text passes AA

What color is cadetblue?

The CSS named color cadetblue is #5f9ea0, or rgb(95 158 160): a medium cyan in plain words. Black text on it reaches 6.88:1, passing WCAG AA, and Recolor (recolor.page) can put it on a real page.

Last updated

#5f9ea0cadetblue
The keyword's value in CSS Color 4 (culori's list of named colors), converted with Recolor's color code, October 9, 2026
FormatValue
Keywordcadetblue
Hex#5f9ea0
RGBrgb(95 158 160)
HSLhsl(182 25% 50%)
OKLCHoklch(65.8% 0.065 198.3)
Nearest Tailwind colorteal-600 #009689, 0.071 away in OKLab
White text3.05:1: AA fails, AAA fails, large text passes
Black text6.88:1: AA passes, AAA fails, large text passes

About cadetblue

Measured in OKLCH, cadetblue comes out at lightness 65.8%, chroma 0.065 and hue 198.3 degrees: a medium cyan.

Its HSL lightness, 50%, says little about how light cadetblue looks; OKLCH, made to match the eye, measures 65.8%, 16 points away. No CSS keyword matches it; lightseagreen (#20b2aa) is the nearest, 0.061 away in OKLab, a clear step off.

Black is the ink for cadetblue: 6.88:1 passes AA for body text, where white stops at 3.05:1. Its neighbors in the hue-sorted list of names are lightseagreen and darkcyan.

The closest Tailwind 4.3.3 color is teal-600, 0.071 away in OKLab, so bg-teal-600 comes near; bg-[#5f9ea0] gives the color itself.

Tints and shades

  1. #e4eeef
  2. #cadedf
  3. #afcecf
  4. #95bebf
  5. #7aaeaf
  6. #5f9ea0
  7. #497b7d
  8. #345a5b
  9. #203a3b
  10. #0e1e1e
  11. #020505

From light to dark: 5 toward white and 5 toward black, mixed in OKLCH a sixth of the way at a time with the hue kept. A step that would repeat its neighbor is left out.

A palette around it

  1. #5f9ea0
  2. #002a2d
  3. #7bbaf1
  4. #5a4e00
  5. #ffd5ec

Around cadetblue as swatch 1, Recolor's generator made a free palette, hues spread around the wheel: #002a2d, #7bbaf1, #5a4e00, #ffd5ec, drawn from a seed fixed by its hex. Open it in Recolor.

Using cadetblue

As a text color, cadetblue on a black page gives the same 6.88:1.

CSS
.notice {
  background-color: cadetblue; /* #5f9ea0 */
  color: black; /* 6.88:1 */
}

Common questions

Does white text pass WCAG AA on cadetblue?

No. White text measures 3.05:1 on cadetblue, under AA's 4.5:1; black text measures 6.88:1 and passes.

Can cadetblue be written in OKLCH?

Yes: oklch(65.8% 0.065 198.3), computed from #5f9ea0. A named color is an sRGB color, so its OKLCH value converts back to the same hex.

Is there a named color close to cadetblue?

No. The nearest, lightseagreen (#20b2aa), is 0.061 away in OKLab, a different color.

Sources