#B7570C
Closest named color: Burnt Siena (#B75203). oklch(56.6% 0.145 50.1), rgb(183, 87, 12).
Aa
White text reads best on this color (4.79:1).
About this color
#B7570C is a medium-dark, vivid orange. In OKLCH its lightness is 57%, its chroma 0.145 and its hue 50°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.010 away. White text reads best on it, at 4.79:1.
| Hue family | Oranges |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.145) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.38:1 |
| White text | 4.79:1 |
Values
| HEX | #B7570C |
| RGB | rgb(183, 87, 12) |
| HSL | hsl(26, 88%, 38%) |
| OKLCH | oklch(56.6% 0.145 50.1) |
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 #B7570C | 4.79:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #B7570C | 4.38:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #B7570C text on white | 4.79:1 | AA | Lc 72.6 | Content text, not long reading |
| #B7570C text on black | 4.38:1 | AA large text | Lc -29.1 | 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
#FBF4F0
oklch(97.1% 0.009 52.1)
-
Step 100
100
#F5E7DF
oklch(93.7% 0.019 52)
-
Step 200
200
#EED3C4
oklch(88.5% 0.037 51)
-
Step 300
300
#E4B59B
oklch(80.9% 0.065 50.4)
-
Step 400
400
#D58D64
oklch(70.7% 0.104 50.1)
-
Step 500
500
#C86E36
oklch(63% 0.133 50)
-
Step 600
600 (this color)
#B7570C
oklch(56.6% 0.145 50.1)
-
Step 700
700
#984500
oklch(49% 0.13 50)
-
Step 800
800
#7D3802
oklch(42.6% 0.112 49.9)
-
Step 900
900
#65310F
oklch(37.6% 0.087 49.8)
-
Step 950
950
#3B1D0B
oklch(26.8% 0.055 49.6)
#B7570C 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) | #736500 | 0.127 |
| Deuteranopia (no green cones) | #8A7B07 | 0.116 |
| Tritanopia (no blue cones) | #C9414A | 0.084 |
| Achromatopsia (no color) | #727272 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B7570C
#B7570C
oklch(56.6% 0.145 50.1)
- #0081AC
#0081AC
oklch(56.5% 0.114 230.6)
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 #B7570C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.010
- Burnt Orange #C04E01 ΔE 0.022
- Orangey Brown #B16002 ΔE 0.023
- Rust Orange #C45508 ΔE 0.024
- Copper #B66325 ΔE 0.026
- Cinnamon #AC4F06 ΔE 0.030
- Brick Orange #C14A09 ΔE 0.030
- Umber #B26400 ΔE 0.032
Use #B7570C 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.