#B0573E
Closest named color: Sienna (#A0522D). oklch(56% 0.122 36.6), rgb(176, 87, 62).
Aa
White text reads best on this color (4.90:1).
About this color
#B0573E is a medium-dark, moderately saturated red. In OKLCH its lightness is 56%, its chroma 0.122 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.038 away. White text reads best on it, at 4.90:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.122) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.27:1 |
| White text | 4.90:1 |
Values
| HEX | #B0573E |
| RGB | rgb(176, 87, 62) |
| HSL | hsl(13, 48%, 47%) |
| OKLCH | oklch(56% 0.122 36.6) |
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 #B0573E | 4.90:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #B0573E | 4.27:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #B0573E text on white | 4.90:1 | AA | Lc 73.5 | Content text, not long reading |
| #B0573E text on black | 4.27:1 | AA large text | Lc -28.2 | 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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F4E6E2
oklch(93.5% 0.016 36.5)
-
Step 200
200
#ECD3CB
oklch(88.5% 0.03 38.6)
-
Step 300
300
#E1B5A8
oklch(80.9% 0.055 37.1)
-
Step 400
400
#D18D7A
oklch(70.7% 0.088 36.3)
-
Step 500
500
#C36F58
oklch(63% 0.112 36.2)
-
Step 600
600 (this color)
#B0573E
oklch(56% 0.122 36.6)
-
Step 700
700
#96452F
oklch(49.1% 0.115 36.2)
-
Step 800
800
#7A3A28
oklch(42.8% 0.094 36.6)
-
Step 900
900
#623225
oklch(37.6% 0.073 36.1)
-
Step 950
950
#3A1E16
oklch(27.1% 0.046 36.8)
#B0573E 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) | #6E653B | 0.121 |
| Deuteranopia (no green cones) | #84783C | 0.111 |
| Tritanopia (no blue cones) | #C04651 | 0.055 |
| Achromatopsia (no color) | #717171 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B0573E
#B0573E
oklch(56% 0.122 36.6)
- #00829A
#00829A
oklch(55.9% 0.1 216.8)
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 #B0573E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.038
- Burnt Siena #B75203 ΔE 0.039
- Earth #A2653E ΔE 0.040
- Cinnamon #AC4F06 ΔE 0.042
- Copper #B66325 ΔE 0.045
- Burnt Orange #C04E01 ΔE 0.045
- Brick Orange #C14A09 ΔE 0.045
- Dusty Red #B9484E ΔE 0.046
Use #B0573E 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.