#B11D28
Closest named color: Firebrick (#B22222). oklch(49.2% 0.181 24.1), rgb(177, 29, 40).
Aa
White text reads best on this color (6.82:1).
About this color
#B11D28 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.181 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.010 away. White text reads best on it, at 6.82:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.07:1 |
| White text | 6.82:1 |
Values
| HEX | #B11D28 |
| RGB | rgb(177, 29, 40) |
| HSL | hsl(356, 72%, 40%) |
| OKLCH | oklch(49.2% 0.181 24.1) |
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.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #B11D28 | 6.82:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #B11D28 | 3.07:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #B11D28 text on white | 6.82:1 | AA | Lc 81.8 | Fine for body text |
| #B11D28 text on black | 3.07:1 | AA large text | Lc -20.1 | Dividers and decoration only |
Tints and shades
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.
-
Step 50
50
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F8CDCA
oklch(88.4% 0.049 22.8)
-
Step 300
300
#F4ABA5
oklch(80.9% 0.087 24.4)
-
Step 400
400
#EB7A75
oklch(70.7% 0.14 23.9)
-
Step 500
500
#E15251
oklch(63.1% 0.179 24.1)
-
Step 600
600
#CD2D35
oklch(55.6% 0.195 24.1)
-
Step 700
700 (this color)
#B11D28
oklch(49.2% 0.181 24.1)
-
Step 800
800
#8F1C22
oklch(42.6% 0.15 24)
-
Step 900
900
#732021
oklch(37.7% 0.116 24)
-
Step 950
950
#441414
oklch(27% 0.074 23.5)
#B11D28 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.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4E4627 | 0.198 |
| Deuteranopia (no green cones) | #726622 | 0.181 |
| Tritanopia (no blue cones) | #C30023 | 0.035 |
| Achromatopsia (no color) | #5B5B5B | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B11D28
#B11D28
oklch(49.2% 0.181 24.1)
- #006E77
#006E77
oklch(49.1% 0.084 204.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #B11D28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.010
- Rufous #AE2012 ΔE 0.020
- Brown #A52A2A ΔE 0.025
- Scarlet #BE0119 ΔE 0.027
- Rouge #AB1239 ΔE 0.031
- Lipstick Red #C0022F ΔE 0.032
- Rust Red #AA2704 ΔE 0.033
- Rusty Red #AF2F0D ΔE 0.035
Use #B11D28 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.