#B55531
Closest named color: Burnt Siena (#B75203). oklch(56.3% 0.135 40.4), rgb(181, 85, 49).
Aa
White text reads best on this color (4.87:1).
About this color
#B55531 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 56%, its chroma 0.135 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.026 away. White text reads best on it, at 4.87:1.
| Hue family | Browns |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.135) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.30:1 |
| White text | 4.87:1 |
Values
| HEX | #B55531 |
| RGB | rgb(181, 85, 49) |
| HSL | hsl(16, 57%, 45%) |
| OKLCH | oklch(56.3% 0.135 40.4) |
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 #B55531 | 4.87:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #B55531 | 4.30:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #B55531 text on white | 4.87:1 | AA | Lc 73.2 | Content text, not long reading |
| #B55531 text on black | 4.30:1 | AA large text | Lc -28.5 | 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
#EED2C9
oklch(88.5% 0.034 38.6)
-
Step 300
300
#E4B4A3
oklch(80.9% 0.061 40.4)
-
Step 400
400
#D58C72
oklch(70.8% 0.097 40.4)
-
Step 500
500
#C76D4C
oklch(63% 0.124 40.6)
-
Step 600
600 (this color)
#B55531
oklch(56.3% 0.135 40.4)
-
Step 700
700
#994322
oklch(49.1% 0.124 40.4)
-
Step 800
800
#7D381E
oklch(42.8% 0.103 40.4)
-
Step 900
900
#65311E
oklch(37.8% 0.081 40.4)
-
Step 950
950
#3B1D12
oklch(27% 0.051 40.6)
#B55531 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) | #6F642D | 0.129 |
| Deuteranopia (no green cones) | #87792F | 0.117 |
| Tritanopia (no blue cones) | #C6414D | 0.065 |
| Achromatopsia (no color) | #717171 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B55531
#B55531
oklch(56.3% 0.135 40.4)
- #00829F
#00829F
oklch(56.2% 0.103 220.8)
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 #B55531, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.026
- Burnt Orange #C04E01 ΔE 0.030
- Brick Orange #C14A09 ΔE 0.031
- Cinnamon #AC4F06 ΔE 0.034
- Rust Orange #C45508 ΔE 0.036
- Copper #B66325 ΔE 0.038
- Sienna #A0522D ΔE 0.042
- Orangey Brown #B16002 ΔE 0.044
Use #B55531 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.