#B3512B
Closest named color: Burnt Siena (#B75203). oklch(55.3% 0.138 40.6), rgb(179, 81, 43).
Aa
White text reads best on this color (5.08:1).
About this color
#B3512B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.138 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.023 away. White text reads best on it, at 5.08:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.12:1 |
| White text | 5.08:1 |
Values
| HEX | #B3512B |
| RGB | rgb(179, 81, 43) |
| HSL | hsl(17, 61%, 44%) |
| OKLCH | oklch(55.3% 0.138 40.6) |
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 #B3512B | 5.08:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #B3512B | 4.12:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #B3512B text on white | 5.08:1 | AA | Lc 74.5 | Content text, not long reading |
| #B3512B text on black | 4.12:1 | AA large text | Lc -27.2 | 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 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
#EED2C8
oklch(88.4% 0.034 40.7)
-
Step 300
300
#E5B4A2
oklch(80.9% 0.063 41.1)
-
Step 400
400
#D68B70
oklch(70.7% 0.1 40.5)
-
Step 500
500
#C96C4A
oklch(63.1% 0.127 40.5)
-
Step 600
600 (this color)
#B3512B
oklch(55.3% 0.138 40.6)
-
Step 700
700
#9B421F
oklch(49.2% 0.128 40.5)
-
Step 800
800
#7E371B
oklch(42.8% 0.107 40.9)
-
Step 900
900
#65301C
oklch(37.6% 0.083 40.8)
-
Step 950
950
#3C1D11
oklch(27.1% 0.053 41.5)
#B3512B 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) | #6C6126 | 0.133 |
| Deuteranopia (no green cones) | #847628 | 0.121 |
| Tritanopia (no blue cones) | #C53C49 | 0.067 |
| Achromatopsia (no color) | #6E6E6E | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3512B
#B3512B
oklch(55.3% 0.138 40.6)
- #007F9C
#007F9C
oklch(55.2% 0.101 221.2)
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 #B3512B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.023
- Cinnamon #AC4F06 ΔE 0.027
- Brick Orange #C14A09 ΔE 0.030
- Burnt Orange #C04E01 ΔE 0.030
- Sienna #A0522D ΔE 0.036
- Sinopia #BB3E03 ΔE 0.036
- Rust Orange #C45508 ΔE 0.040
- Copper #B66325 ΔE 0.045
Use #B3512B 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.