#B02837
Closest named color: Firebrick (#B22222). oklch(50.1% 0.171 20.5), rgb(176, 40, 55).
Aa
White text reads best on this color (6.55:1).
About this color
#B02837 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.171 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.021 away. White text reads best on it, at 6.55:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #B02837 |
| RGB | rgb(176, 40, 55) |
| HSL | hsl(353, 63%, 42%) |
| OKLCH | oklch(50.1% 0.171 20.5) |
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 #B02837 | 6.55:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #B02837 | 3.20:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #B02837 text on white | 6.55:1 | AA | Lc 81.0 | Fine for body text |
| #B02837 text on black | 3.20:1 | AA large text | Lc -20.8 | 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
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F6CECC
oklch(88.5% 0.045 21.4)
-
Step 300
300
#F2ACAA
oklch(81% 0.083 20.9)
-
Step 400
400
#E77C7D
oklch(70.6% 0.132 20.4)
-
Step 500
500
#DD565C
oklch(63.1% 0.169 20.7)
-
Step 600
600
#C83443
oklch(55.6% 0.184 20.3)
-
Step 700
700 (this color)
#B02837
oklch(50.1% 0.171 20.5)
-
Step 800
800
#8C212C
oklch(42.7% 0.142 20.3)
-
Step 900
900
#712227
oklch(37.7% 0.111 20.7)
-
Step 950
950
#421517
oklch(26.8% 0.07 20.5)
#B02837 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) | #504B36 | 0.189 |
| Deuteranopia (no green cones) | #726833 | 0.173 |
| Tritanopia (no blue cones) | #C2002F | 0.038 |
| Achromatopsia (no color) | #5D5D5D | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B02837
#B02837
oklch(50.1% 0.171 20.5)
- #007277
#007277
oklch(50.2% 0.085 200.1)
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 #B02837, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.021
- Brown #A52A2A ΔE 0.027
- Rouge #AB1239 ΔE 0.029
- Rufous #AE2012 ΔE 0.034
- Lipstick Red #C0022F ΔE 0.035
- Rose Red #BE013C ΔE 0.036
- Scarlet #BE0119 ΔE 0.038
- Rusty Red #AF2F0D ΔE 0.042
Use #B02837 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.