Firebrick #B22222

Firebrick is a medium-dark, vivid red with hex code #B22222 and RGB rgb(178, 34, 34).

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White text reads best on this color (6.67:1).

About this color

#B22222 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.180 and its hue 27°. Its hue sits on the warm side of the wheel. It is the named color Firebrick. White text reads best on it, at 6.67:1.

Hue familyReds
Lightnessmedium-dark (50%)
Chromavivid (0.180)
Temperaturewarm
Nearest nameFirebrick
Black text3.14:1
White text6.67:1

Colors that go with Firebrick

Matches found by rotating Firebrick around the OKLCH hue wheel, each labelled with the closest name in our list.

Color palettes with Firebrick

Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Firebrick, closest first.

Similar named colors

The eight named colors closest to Firebrick, with their ΔE distance.

More about Firebrick

How to make Firebrick

A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.

  • 2 parts red
  • 1 part brown

Recipe result: #B32F2E, a difference of ΔE 0.017 from Firebrick. That is very close: most people will not see the difference.

What colors make red? | Color mixing chart

Codes for Firebrick in every format

HEX#B22222
RGBrgb(178, 34, 34)
HSLhsl(0, 68%, 42%)
OKLCHoklch(49.7% 0.18 26.8)

Contrast

WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.

PairWCAG 2ResultAPCAAPCA guidance
White text on #B22222 6.67:1 AA Lc -86.4 Fine for body text
Black text on #B22222 3.14:1 AA large text Lc 22.7 Dividers and decoration only
#B22222 text on white 6.67:1 AA Lc 81.3 Fine for body text
#B22222 text on black 3.14:1 AA large text Lc -20.5 Dividers and decoration only

Shades and tints of Firebrick

A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.

  1. Step 50

    50

    #FDF3F1

    oklch(97.1% 0.011 31.1)

  2. Step 100

    100

    #FAE4E1

    oklch(93.6% 0.025 26.9)

  3. Step 200

    200

    #F8CEC8

    oklch(88.6% 0.048 27.6)

  4. Step 300

    300

    #F4ABA3

    oklch(80.9% 0.087 26.1)

  5. Step 400

    400

    #EB7B71

    oklch(70.7% 0.14 26.5)

  6. Step 500

    500

    #E1534B

    oklch(63.1% 0.179 26.7)

  7. Step 600

    600

    #CC302D

    oklch(55.6% 0.193 27)

  8. Step 700

    700 (this color)

    #B22222

    oklch(49.7% 0.18 26.8)

  9. Step 800

    800

    #8F1E1D

    oklch(42.7% 0.149 26.6)

  10. Step 900

    900

    #73211D

    oklch(37.8% 0.116 27)

  11. Step 950

    950

    #441512

    oklch(27.1% 0.073 26.7)

Export this scale for Tailwind in the Tailwind colors tool

Firebrick with color blindness

Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.

VisionSeen asShift (ΔE)
Protanopia (no red cones)#5148200.194
Deuteranopia (no green cones)#74671B0.176
Tritanopia (no blue cones)#C400240.037
Achromatopsia (no color)#5C5C5C0.181

Use Firebrick in your product

Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.