#B15A33
Closest named color: Burnt Siena (#B75203). oklch(56.5% 0.125 43.6), rgb(177, 90, 51).
Aa
White text reads best on this color (4.79:1).
About this color
#B15A33 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 57%, its chroma 0.125 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.028 away. White text reads best on it, at 4.79:1.
| Hue family | Browns |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.125) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.37:1 |
| White text | 4.79:1 |
Values
| HEX | #B15A33 |
| RGB | rgb(177, 90, 51) |
| HSL | hsl(19, 55%, 45%) |
| OKLCH | oklch(56.5% 0.125 43.6) |
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 #B15A33 | 4.79:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #B15A33 | 4.37:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #B15A33 text on white | 4.79:1 | AA | Lc 72.8 | Content text, not long reading |
| #B15A33 text on black | 4.37:1 | AA large text | Lc -28.9 | 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 600.
-
Step 50
50
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E7E1
oklch(93.7% 0.016 46.6)
-
Step 200
200
#ECD3C9
oklch(88.5% 0.031 43.1)
-
Step 300
300
#E1B6A4
oklch(81% 0.056 43.9)
-
Step 400
400
#D08E73
oklch(70.6% 0.089 43.1)
-
Step 500
500
#C3714D
oklch(63.2% 0.115 43.9)
-
Step 600
600 (this color)
#B15A33
oklch(56.5% 0.125 43.6)
-
Step 700
700
#954723
oklch(49.1% 0.116 43.6)
-
Step 800
800
#793B1F
oklch(42.7% 0.096 43.6)
-
Step 900
900
#62331E
oklch(37.7% 0.075 44)
-
Step 950
950
#3A1E12
oklch(27% 0.049 43.5)
#B15A33 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) | #72662F | 0.115 |
| Deuteranopia (no green cones) | #877A31 | 0.107 |
| Tritanopia (no blue cones) | #C24851 | 0.067 |
| Achromatopsia (no color) | #727272 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B15A33
#B15A33
oklch(56.5% 0.125 43.6)
- #0083A3
#0083A3
oklch(56.6% 0.105 222.9)
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 #B15A33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.028
- Copper #B66325 ΔE 0.030
- Earth #A2653E ΔE 0.034
- Cinnamon #AC4F06 ΔE 0.035
- Orangey Brown #B16002 ΔE 0.036
- Burnt Orange #C04E01 ΔE 0.037
- Raw Umber #A75E09 ΔE 0.038
- Rust Orange #C45508 ΔE 0.040
Use #B15A33 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.