#B12E00
Closest named color: Rusty Red (#AF2F0D). oklch(50.3% 0.174 35.7), rgb(177, 46, 0).
Aa
White text reads best on this color (6.44:1).
About this color
#B12E00 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.174 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.006 away. White text reads best on it, at 6.44:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.26:1 |
| White text | 6.44:1 |
Values
| HEX | #B12E00 |
| RGB | rgb(177, 46, 0) |
| HSL | hsl(16, 100%, 35%) |
| OKLCH | oklch(50.3% 0.174 35.7) |
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 #B12E00 | 6.44:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #B12E00 | 3.26:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #B12E00 text on white | 6.44:1 | AA | Lc 80.6 | Fine for body text |
| #B12E00 text on black | 3.26:1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE5DF
oklch(93.7% 0.025 36.5)
-
Step 200
200
#F6CFC4
oklch(88.5% 0.047 36.3)
-
Step 300
300
#F1AE9B
oklch(80.9% 0.084 36.5)
-
Step 400
400
#E78064
oklch(70.7% 0.134 36.1)
-
Step 500
500
#DD5A37
oklch(63.1% 0.172 35.8)
-
Step 600
600
#C8390A
oklch(55.5% 0.186 35.7)
-
Step 700
700 (this color)
#B12E00
oklch(50.3% 0.174 35.7)
-
Step 800
800
#8C2504
oklch(42.6% 0.143 35.8)
-
Step 900
900
#712510
oklch(37.8% 0.112 35.9)
-
Step 950
950
#42170B
oklch(26.9% 0.07 36.4)
#B12E00 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) | #574C00 | 0.180 |
| Deuteranopia (no green cones) | #776900 | 0.161 |
| Tritanopia (no blue cones) | #C40028 | 0.057 |
| Achromatopsia (no color) | #5E5E5E | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B12E00
#B12E00
oklch(50.3% 0.174 35.7)
- #007084
#007084
oklch(50.2% 0.089 215.8)
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 #B12E00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.006
- Rust Red #AA2704 ΔE 0.020
- Rufous #AE2012 ΔE 0.024
- Firebrick #B22222 ΔE 0.029
- Russet #A13905 ΔE 0.033
- Brick #A03623 ΔE 0.036
- Sinopia #BB3E03 ΔE 0.036
- Brown #A52A2A ΔE 0.039
Use #B12E00 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.