#B15531
Closest named color: Burnt Siena (#B75203). oklch(55.7% 0.13 41.1), rgb(177, 85, 49).
Aa
White text reads best on this color (4.98:1).
About this color
#B15531 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 56%, its chroma 0.130 and its hue 41°. 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 4.98:1.
| Hue family | Browns |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.130) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.21:1 |
| White text | 4.98:1 |
Values
| HEX | #B15531 |
| RGB | rgb(177, 85, 49) |
| HSL | hsl(17, 57%, 44%) |
| OKLCH | oklch(55.7% 0.13 41.1) |
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 #B15531 | 4.98:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #B15531 | 4.21:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #B15531 text on white | 4.98:1 | AA | Lc 74.0 | Content text, not long reading |
| #B15531 text on black | 4.21:1 | AA large text | Lc -27.7 | 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
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EDD3C9
oklch(88.6% 0.032 42.2)
-
Step 300
300
#E3B5A4
oklch(81% 0.059 41.3)
-
Step 400
400
#D38D73
oklch(70.8% 0.094 41.2)
-
Step 500
500
#C56F4E
oklch(63.1% 0.119 41.4)
-
Step 600
600 (this color)
#B15531
oklch(55.7% 0.13 41.1)
-
Step 700
700
#984523
oklch(49.2% 0.121 41.5)
-
Step 800
800
#7B391F
oklch(42.7% 0.1 41.2)
-
Step 900
900
#64321F
oklch(37.8% 0.078 41.1)
-
Step 950
950
#3B1E13
oklch(27.2% 0.049 41.3)
#B15531 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) | #6E632D | 0.124 |
| Deuteranopia (no green cones) | #85772F | 0.112 |
| Tritanopia (no blue cones) | #C2424D | 0.065 |
| Achromatopsia (no color) | #707070 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B15531
#B15531
oklch(55.7% 0.13 41.1)
- #00809E
#00809E
oklch(55.6% 0.103 221.9)
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 #B15531, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.027
- Cinnamon #AC4F06 ΔE 0.030
- Sienna #A0522D ΔE 0.035
- Burnt Orange #C04E01 ΔE 0.035
- Brick Orange #C14A09 ΔE 0.036
- Copper #B66325 ΔE 0.040
- Earth #A2653E ΔE 0.042
- Rust Orange #C45508 ΔE 0.042
Use #B15531 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.