#B7573E
Closest named color: Burnt Siena (#B75203). oklch(57% 0.131 35.7), rgb(183, 87, 62).
Aa
White text reads best on this color (4.72:1).
About this color
#B7573E is a medium-dark, moderately saturated red. In OKLCH its lightness is 57%, its chroma 0.131 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.039 away. White text reads best on it, at 4.72:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.131) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #B7573E |
| RGB | rgb(183, 87, 62) |
| HSL | hsl(12, 49%, 48%) |
| OKLCH | oklch(57% 0.131 35.7) |
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 #B7573E | 4.72:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #B7573E | 4.44:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #B7573E text on white | 4.72:1 | AA | Lc 72.3 | Content text, not long reading |
| #B7573E text on black | 4.44:1 | AA large text | Lc -29.4 | 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
#FBF4F2
oklch(97.2% 0.008 36.6)
-
Step 100
100
#F5E6E2
oklch(93.6% 0.017 35.3)
-
Step 200
200
#EED2CB
oklch(88.5% 0.033 34.3)
-
Step 300
300
#E4B4A7
oklch(81% 0.059 35.6)
-
Step 400
400
#D48B78
oklch(70.6% 0.094 35.3)
-
Step 500
500
#C76D55
oklch(63.2% 0.12 35.9)
-
Step 600
600 (this color)
#B7573E
oklch(57% 0.131 35.7)
-
Step 700
700
#99432C
oklch(49.2% 0.121 36)
-
Step 800
800
#7C3725
oklch(42.6% 0.101 35.7)
-
Step 900
900
#643123
oklch(37.7% 0.077 36.3)
-
Step 950
950
#3B1D15
oklch(27% 0.049 35.8)
#B7573E 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) | #70663B | 0.130 |
| Deuteranopia (no green cones) | #887B3C | 0.118 |
| Tritanopia (no blue cones) | #C84551 | 0.056 |
| Achromatopsia (no color) | #737373 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B7573E
#B7573E
oklch(57% 0.131 35.7)
- #00869D
#00869D
oklch(57.1% 0.101 215.4)
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 #B7573E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.039
- Burnt Orange #C04E01 ΔE 0.039
- Brick Orange #C14A09 ΔE 0.040
- Rust Orange #C45508 ΔE 0.042
- Copper #B66325 ΔE 0.042
- Clay #B66A50 ΔE 0.042
- Dusty Red #B9484E ΔE 0.043
- Cinnamon #AC4F06 ΔE 0.048
Use #B7573E 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.