#B1402B
Closest named color: Sinopia (#BB3E03). oklch(52.6% 0.152 32.6), rgb(177, 64, 43).
Aa
White text reads best on this color (5.77:1).
About this color
#B1402B is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.152 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.029 away. White text reads best on it, at 5.77:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.63:1 |
| White text | 5.77:1 |
Values
| HEX | #B1402B |
| RGB | rgb(177, 64, 43) |
| HSL | hsl(9, 61%, 43%) |
| OKLCH | oklch(52.6% 0.152 32.6) |
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 #B1402B | 5.77:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #B1402B | 3.63:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #B1402B text on white | 5.77:1 | AA | Lc 78.0 | Fine for body text |
| #B1402B text on black | 3.63:1 | AA large text | Lc -23.8 | 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 600.
-
Step 50
50
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F7E5E2
oklch(93.5% 0.02 28.9)
-
Step 200
200
#F1D1C9
oklch(88.5% 0.038 34.3)
-
Step 300
300
#E9B1A5
oklch(80.9% 0.068 32.3)
-
Step 400
400
#DC8674
oklch(70.6% 0.11 32.6)
-
Step 500
500
#D06550
oklch(63.1% 0.14 32.6)
-
Step 600
600 (this color)
#B1402B
oklch(52.6% 0.152 32.6)
-
Step 700
700
#A13A27
oklch(49.1% 0.141 32.6)
-
Step 800
800
#833121
oklch(42.8% 0.117 32.9)
-
Step 900
900
#692C20
oklch(37.6% 0.091 32.8)
-
Step 950
950
#3E1A13
oklch(26.9% 0.058 32.4)
#B1402B 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) | #605628 | 0.156 |
| Deuteranopia (no green cones) | #7C6F27 | 0.143 |
| Tritanopia (no blue cones) | #C3233C | 0.057 |
| Achromatopsia (no color) | #666666 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1402B
#B1402B
oklch(52.6% 0.152 32.6)
- #00788A
#00788A
oklch(52.6% 0.092 212.8)
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 #B1402B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.029
- Dull Red #BB3F3F ΔE 0.031
- Rusty Red #AF2F0D ΔE 0.031
- Brick #A03623 ΔE 0.043
- Burnt Umber #A0450E ΔE 0.043
- Dusty Red #B9484E ΔE 0.044
- Firebrick #B22222 ΔE 0.044
- Russet #A13905 ΔE 0.044
Use #B1402B 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.