A vivid dark red, white text passes AA

What color is firebrick?

firebrick is a vivid dark red: #b22222 in hex, rgb(178 34 34). White text on it reaches 6.68:1, passing WCAG AA. Recolor (recolor.page) shows it on a real page below.

Last updated

#b22222firebrick
The keyword's value in CSS Color 4 (culori's list of named colors), converted with Recolor's color code, October 9, 2026
FormatValue
Keywordfirebrick
Hex#b22222
RGBrgb(178 34 34)
HSLhsl(0 68% 42%)
OKLCHoklch(49.7% 0.180 26.8)
Nearest Tailwind colorred-700 #c10007, 0.032 away in OKLab
White text6.68:1: AA passes, AAA fails, large text passes
Black text3.14:1: AA fails, AAA fails, large text passes

About firebrick

Measured in OKLCH, firebrick comes out at lightness 49.7%, chroma 0.180 and hue 26.8 degrees: a vivid dark red.

HSL calls its lightness 42%, OKLCH 49.7%: 8 points between a formula and a measure of what the eye sees. Of the named colors, brown (#a52a2a) is the nearest, 0.026 away in OKLab; next to each other the two still differ.

White is the ink for firebrick: 6.68:1 passes AA for body text, where black stops at 3.14:1. In the hue-sorted table of named colors it sits between crimson and brown.

In Tailwind CSS 4.3.3 the nearest default color is red-700 (#c10007), 0.032 away in OKLab; for the exact color, an arbitrary value such as bg-[#b22222] works.

Tints and shades

  1. #f7dcd9
  2. #edbab3
  3. #e1988f
  4. #d3756b
  5. #c35048
  6. #b22222
  7. #8b1818
  8. #660f0f
  9. #430707
  10. #230202
  11. #070000

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. #b22222
  2. #d5b8b1
  3. #081d23
  4. #987820
  5. #ded6f2

Around firebrick as swatch 1, Recolor's generator made a free palette, hues spread around the wheel: #d5b8b1, #081d23, #987820, #ded6f2, drawn from a seed fixed by its hex. Open it in Recolor.

Using firebrick

As a text color, firebrick on a white page gives the same 6.68:1.

CSS
.notice {
  background-color: firebrick; /* #b22222 */
  color: white; /* 6.68:1 */
}

Common questions

Does white text pass WCAG AA on firebrick?

Yes. White text measures 6.68:1 on firebrick, above the 4.5:1 that WCAG AA asks of body text.

Can firebrick be written in OKLCH?

Yes: oklch(49.7% 0.180 26.8), computed from #b22222. A named color is an sRGB color, so its OKLCH value converts back to the same hex.

Is there a named color close to firebrick?

Yes: brown (#a52a2a) is the nearest, 0.026 away in OKLab, then sienna at 0.084.

Sources