#B15B33
Closest named color: Copper (#B66325). oklch(56.7% 0.124 44.2), rgb(177, 91, 51).
Aa
White text reads best on this color (4.75:1).
About this color
#B15B33 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 57%, its chroma 0.124 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.028 away. White text reads best on it, at 4.75:1.
| Hue family | Browns |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.124) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.41:1 |
| White text | 4.75:1 |
Values
| HEX | #B15B33 |
| RGB | rgb(177, 91, 51) |
| HSL | hsl(19, 55%, 45%) |
| OKLCH | oklch(56.7% 0.124 44.2) |
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 #B15B33 | 4.75:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #B15B33 | 4.41:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #B15B33 text on white | 4.75:1 | AA | Lc 72.6 | Content text, not long reading |
| #B15B33 text on black | 4.41:1 | AA large text | Lc -29.1 | 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
#D08F72
oklch(70.8% 0.089 44.9)
-
Step 500
500
#C2714D
oklch(63.1% 0.114 44.2)
-
Step 600
600 (this color)
#B15B33
oklch(56.7% 0.124 44.2)
-
Step 700
700
#954722
oklch(49.1% 0.116 44)
-
Step 800
800
#793B1E
oklch(42.7% 0.096 44.2)
-
Step 900
900
#62331E
oklch(37.7% 0.075 44)
-
Step 950
950
#391E12
oklch(26.9% 0.047 44.3)
#B15B33 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) | #73672F | 0.113 |
| Deuteranopia (no green cones) | #877A32 | 0.104 |
| Tritanopia (no blue cones) | #C24A52 | 0.067 |
| Achromatopsia (no color) | #737373 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B15B33
#B15B33
oklch(56.7% 0.124 44.2)
- #0083A5
#0083A5
oklch(56.7% 0.107 224.3)
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 #B15B33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.028
- Burnt Siena #B75203 ΔE 0.029
- Earth #A2653E ΔE 0.033
- Orangey Brown #B16002 ΔE 0.035
- Cinnamon #AC4F06 ΔE 0.036
- Raw Umber #A75E09 ΔE 0.037
- Burnt Orange #C04E01 ΔE 0.038
- Rust Orange #C45508 ΔE 0.039
Use #B15B33 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.