#B12D0B
Closest named color: Rusty Red (#AF2F0D). oklch(50.3% 0.173 34.1), rgb(177, 45, 11).
Aa
White text reads best on this color (6.46:1).
About this color
#B12D0B is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.173 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.004 away. White text reads best on it, at 6.46:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.24:1 |
| White text | 6.46:1 |
Values
| HEX | #B12D0B |
| RGB | rgb(177, 45, 11) |
| HSL | hsl(12, 88%, 37%) |
| OKLCH | oklch(50.3% 0.173 34.1) |
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 #B12D0B | 6.46:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #B12D0B | 3.24:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #B12D0B text on white | 6.46:1 | AA | Lc 80.7 | Fine for body text |
| #B12D0B text on black | 3.24:1 | AA large text | Lc -21.2 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE5DF
oklch(93.7% 0.025 36.5)
-
Step 200
200
#F6CFC5
oklch(88.5% 0.046 34.7)
-
Step 300
300
#F1AD9D
oklch(80.8% 0.084 33.7)
-
Step 400
400
#E77F67
oklch(70.6% 0.134 34)
-
Step 500
500
#DD593C
oklch(63% 0.172 34)
-
Step 600
600
#C93816
oklch(55.6% 0.187 33.9)
-
Step 700
700 (this color)
#B12D0B
oklch(50.3% 0.173 34.1)
-
Step 800
800
#8C240B
oklch(42.6% 0.143 34)
-
Step 900
900
#712413
oklch(37.7% 0.112 34)
-
Step 950
950
#43170D
oklch(27.2% 0.071 34.3)
#B12D0B 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) | #564B02 | 0.182 |
| Deuteranopia (no green cones) | #776900 | 0.164 |
| Tritanopia (no blue cones) | #C40028 | 0.054 |
| Achromatopsia (no color) | #5E5E5E | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B12D0B
#B12D0B
oklch(50.3% 0.173 34.1)
- #007083
#007083
oklch(50.2% 0.089 214.8)
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 #B12D0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.004
- Rust Red #AA2704 ΔE 0.019
- Rufous #AE2012 ΔE 0.021
- Firebrick #B22222 ΔE 0.024
- Brick #A03623 ΔE 0.035
- Russet #A13905 ΔE 0.035
- Brown #A52A2A ΔE 0.036
- Sinopia #BB3E03 ΔE 0.039
Use #B12D0B 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.