#B4512F
Closest named color: Burnt Siena (#B75203). oklch(55.5% 0.138 39), rgb(180, 81, 47).
Aa
White text reads best on this color (5.04:1).
About this color
#B4512F is a medium-dark, moderately saturated red. In OKLCH its lightness is 55%, its chroma 0.138 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.027 away. White text reads best on it, at 5.04:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.15:1 |
| White text | 5.04:1 |
Values
| HEX | #B4512F |
| RGB | rgb(180, 81, 47) |
| HSL | hsl(15, 59%, 45%) |
| OKLCH | oklch(55.5% 0.138 39) |
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 #B4512F | 5.04:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #B4512F | 4.15:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #B4512F text on white | 5.04:1 | AA | Lc 74.3 | Content text, not long reading |
| #B4512F text on black | 4.15:1 | AA large text | Lc -27.4 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EED2C9
oklch(88.5% 0.034 38.6)
-
Step 300
300
#E5B4A3
oklch(81% 0.062 40)
-
Step 400
400
#D68B72
oklch(70.8% 0.099 39.2)
-
Step 500
500
#C96C4D
oklch(63.1% 0.126 39)
-
Step 600
600 (this color)
#B4512F
oklch(55.5% 0.138 39)
-
Step 700
700
#9B4122
oklch(49.1% 0.128 38.8)
-
Step 800
800
#7E361E
oklch(42.7% 0.107 38.6)
-
Step 900
900
#66301E
oklch(37.8% 0.083 38.9)
-
Step 950
950
#3C1D12
oklch(27.1% 0.052 40.1)
#B4512F 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) | #6C612B | 0.134 |
| Deuteranopia (no green cones) | #84772C | 0.123 |
| Tritanopia (no blue cones) | #C63C4A | 0.065 |
| Achromatopsia (no color) | #6F6F6F | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4512F
#B4512F
oklch(55.5% 0.138 39)
- #00809B
#00809B
oklch(55.5% 0.101 219.5)
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 #B4512F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.027
- Brick Orange #C14A09 ΔE 0.030
- Cinnamon #AC4F06 ΔE 0.031
- Burnt Orange #C04E01 ΔE 0.031
- Sinopia #BB3E03 ΔE 0.037
- Sienna #A0522D ΔE 0.038
- Rust Orange #C45508 ΔE 0.040
- Dull Red #BB3F3F ΔE 0.046
Use #B4512F 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.