#B15B28
Closest named color: Burnt Siena (#B75203). oklch(56.5% 0.129 48.3), rgb(177, 91, 40).
Aa
White text reads best on this color (4.77:1).
About this color
#B15B28 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 57%, its chroma 0.129 and its hue 48°. 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 4.77:1.
| Hue family | Browns |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.129) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.39:1 |
| White text | 4.77:1 |
Values
| HEX | #B15B28 |
| RGB | rgb(177, 91, 40) |
| HSL | hsl(22, 63%, 43%) |
| OKLCH | oklch(56.5% 0.129 48.3) |
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 #B15B28 | 4.77:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #B15B28 | 4.39:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #B15B28 text on white | 4.77:1 | AA | Lc 72.7 | Content text, not long reading |
| #B15B28 text on black | 4.39:1 | AA large text | Lc -29.0 | 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
#F4E7E0
oklch(93.6% 0.017 50.4)
-
Step 200
200
#ECD3C7
oklch(88.4% 0.032 47.3)
-
Step 300
300
#E1B6A1
oklch(80.9% 0.058 47.4)
-
Step 400
400
#D08F6D
oklch(70.7% 0.092 48.4)
-
Step 500
500
#C27245
oklch(63.1% 0.118 48.9)
-
Step 600
600 (this color)
#B15B28
oklch(56.5% 0.129 48.3)
-
Step 700
700
#954817
oklch(49.1% 0.119 48.6)
-
Step 800
800
#793B16
oklch(42.6% 0.099 48.1)
-
Step 900
900
#623319
oklch(37.6% 0.078 47.9)
-
Step 950
950
#3A1E10
oklch(27% 0.05 46.4)
#B15B28 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) | #736721 | 0.114 |
| Deuteranopia (no green cones) | #887A27 | 0.103 |
| Tritanopia (no blue cones) | #C24950 | 0.074 |
| Achromatopsia (no color) | #727272 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B15B28
#B15B28
oklch(56.5% 0.129 48.3)
- #0082A9
#0082A9
oklch(56.6% 0.11 227.9)
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 #B15B28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.023
- Copper #B66325 ΔE 0.023
- Orangey Brown #B16002 ΔE 0.025
- Raw Umber #A75E09 ΔE 0.029
- Cinnamon #AC4F06 ΔE 0.031
- Umber #B26400 ΔE 0.033
- Earth #A2653E ΔE 0.034
- Burnt Orange #C04E01 ΔE 0.035
Use #B15B28 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.