#B0571B
Closest named color: Burnt Siena (#B75203). oklch(55.6% 0.135 49.5), rgb(176, 87, 27).
Aa
White text reads best on this color (4.97:1).
About this color
#B0571B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 56%, its chroma 0.135 and its hue 50°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.016 away. White text reads best on it, at 4.97:1.
| Hue family | Browns |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.135) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.22:1 |
| White text | 4.97:1 |
Values
| HEX | #B0571B |
| RGB | rgb(176, 87, 27) |
| HSL | hsl(24, 73%, 40%) |
| OKLCH | oklch(55.6% 0.135 49.5) |
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 #B0571B | 4.97:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #B0571B | 4.22:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #B0571B text on white | 4.97:1 | AA | Lc 73.9 | Content text, not long reading |
| #B0571B text on black | 4.22:1 | AA large text | Lc -27.8 | 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
#EDD3C6
oklch(88.5% 0.034 48.3)
-
Step 300
300
#E2B69E
oklch(80.9% 0.061 50.1)
-
Step 400
400
#D28E69
oklch(70.7% 0.097 49.2)
-
Step 500
500
#C4713F
oklch(63.1% 0.123 50)
-
Step 600
600 (this color)
#B0571B
oklch(55.6% 0.135 49.5)
-
Step 700
700
#97460B
oklch(49% 0.126 49.2)
-
Step 800
800
#7B3A0F
oklch(42.7% 0.105 49)
-
Step 900
900
#633315
oklch(37.7% 0.081 50)
-
Step 950
950
#3A1E0E
oklch(26.9% 0.051 49.1)
#B0571B 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) | #716310 | 0.118 |
| Deuteranopia (no green cones) | #867819 | 0.108 |
| Tritanopia (no blue cones) | #C1434B | 0.079 |
| Achromatopsia (no color) | #707070 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B0571B
#B0571B
oklch(55.6% 0.135 49.5)
- #007EA7
#007EA7
oklch(55.5% 0.111 230)
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 #B0571B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.016
- Cinnamon #AC4F06 ΔE 0.021
- Raw Umber #A75E09 ΔE 0.026
- Orangey Brown #B16002 ΔE 0.026
- Copper #B66325 ΔE 0.031
- Burnt Orange #C04E01 ΔE 0.032
- Umber #B26400 ΔE 0.036
- Brick Orange #C14A09 ΔE 0.037
Use #B0571B 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.