#B12E1D
Closest named color: Rusty Red (#AF2F0D). oklch(50.5% 0.17 30.9), rgb(177, 46, 29).
Aa
White text reads best on this color (6.40:1).
About this color
#B12E1D is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.170 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.011 away. White text reads best on it, at 6.40:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.170) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #B12E1D |
| RGB | rgb(177, 46, 29) |
| HSL | hsl(7, 72%, 40%) |
| OKLCH | oklch(50.5% 0.17 30.9) |
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 #B12E1D | 6.40:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #B12E1D | 3.27:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #B12E1D text on white | 6.40:1 | AA | Lc 80.5 | Fine for body text |
| #B12E1D text on black | 3.27:1 | AA large text | Lc -21.3 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E4E0
oklch(93.5% 0.024 30.5)
-
Step 200
200
#F6CFC7
oklch(88.6% 0.046 31.6)
-
Step 300
300
#F1ADA0
oklch(80.8% 0.083 31.1)
-
Step 400
400
#E77F6D
oklch(70.7% 0.132 31)
-
Step 500
500
#DC5945
oklch(63% 0.168 31)
-
Step 600
600
#C83926
oklch(55.7% 0.183 30.9)
-
Step 700
700 (this color)
#B12E1D
oklch(50.5% 0.17 30.9)
-
Step 800
800
#8C2517
oklch(42.8% 0.141 31)
-
Step 900
900
#70241A
oklch(37.6% 0.11 30.4)
-
Step 950
950
#421710
oklch(27% 0.069 31.3)
#B12E1D 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) | #564C19 | 0.181 |
| Deuteranopia (no green cones) | #766916 | 0.164 |
| Tritanopia (no blue cones) | #C3002C | 0.050 |
| Achromatopsia (no color) | #5F5F5F | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B12E1D
#B12E1D
oklch(50.5% 0.17 30.9)
- #007181
#007181
oklch(50.3% 0.088 211.7)
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 #B12E1D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.011
- Firebrick #B22222 ΔE 0.017
- Rufous #AE2012 ΔE 0.020
- Rust Red #AA2704 ΔE 0.023
- Brown #A52A2A ΔE 0.030
- Brick #A03623 ΔE 0.033
- Scarlet #BE0119 ΔE 0.038
- Russet #A13905 ΔE 0.039
Use #B12E1D 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.