#B4230E
Closest named color: Rufous (#AE2012). oklch(50% 0.183 31.3), rgb(180, 35, 14).
Aa
White text reads best on this color (6.58:1).
About this color
#B4230E is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.183 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.014 away. White text reads best on it, at 6.58:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.183) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 3.18:1 |
| White text | 6.58:1 |
Values
| HEX | #B4230E |
| RGB | rgb(180, 35, 14) |
| HSL | hsl(8, 86%, 38%) |
| OKLCH | oklch(50% 0.183 31.3) |
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 #B4230E | 6.58:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #B4230E | 3.18:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #B4230E text on white | 6.58:1 | AA | Lc 80.9 | Fine for body text |
| #B4230E text on black | 3.18:1 | AA large text | Lc -20.9 | 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
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC5
oklch(88.5% 0.049 32.1)
-
Step 300
300
#F4AC9E
oklch(80.9% 0.088 31.3)
-
Step 400
400
#EB7C68
oklch(70.7% 0.141 31.5)
-
Step 500
500
#E2543E
oklch(63.2% 0.181 31.3)
-
Step 600
600
#CD3019
oklch(55.6% 0.196 31.4)
-
Step 700
700 (this color)
#B4230E
oklch(50% 0.183 31.3)
-
Step 800
800
#901E0E
oklch(42.8% 0.152 31.3)
-
Step 900
900
#732115
oklch(37.7% 0.117 31.2)
-
Step 950
950
#44150D
oklch(27% 0.075 31.9)
#B4230E 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) | #534907 | 0.196 |
| Deuteranopia (no green cones) | #766800 | 0.176 |
| Tritanopia (no blue cones) | #C70021 | 0.043 |
| Achromatopsia (no color) | #5D5D5D | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4230E
#B4230E
oklch(50% 0.183 31.3)
- #00707F
#00707F
oklch(50% 0.087 210.8)
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 #B4230E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.014
- Firebrick #B22222 ΔE 0.015
- Rusty Red #AF2F0D ΔE 0.017
- Rust Red #AA2704 ΔE 0.021
- Scarlet #BE0119 ΔE 0.029
- Brown #A52A2A ΔE 0.035
- Brick #A03623 ΔE 0.042
- Lipstick Red #C0022F ΔE 0.044
Use #B4230E 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.