#B9581B
Closest named color: Burnt Siena (#B75203). oklch(57.1% 0.143 47.7), rgb(185, 88, 27).
Aa
White text reads best on this color (4.69:1).
About this color
#B9581B is a medium-dark, vivid orange. In OKLCH its lightness is 57%, its chroma 0.143 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.015 away. White text reads best on it, at 4.69:1.
| Hue family | Oranges |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.47:1 |
| White text | 4.69:1 |
Values
| HEX | #B9581B |
| RGB | rgb(185, 88, 27) |
| HSL | hsl(23, 75%, 42%) |
| OKLCH | oklch(57.1% 0.143 47.7) |
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 #B9581B | 4.69:1 | AA | Lc -77.4 | Fine for body text |
| Black text on #B9581B | 4.47:1 | AA large text | Lc 32.1 | Non-text elements, placeholder text |
| #B9581B text on white | 4.69:1 | AA | Lc 72.0 | Content text, not long reading |
| #B9581B text on black | 4.47:1 | AA large text | Lc -29.7 | 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
#F5E6DF
oklch(93.5% 0.019 46.8)
-
Step 200
200
#EED3C5
oklch(88.6% 0.036 49.2)
-
Step 300
300
#E4B59D
oklch(80.9% 0.064 48.4)
-
Step 400
400
#D58C67
oklch(70.6% 0.103 47.4)
-
Step 500
500
#C86E3C
oklch(63.1% 0.131 47.9)
-
Step 600
600 (this color)
#B9581B
oklch(57.1% 0.143 47.7)
-
Step 700
700
#9A4302
oklch(49% 0.133 47.8)
-
Step 800
800
#7D380A
oklch(42.6% 0.11 48)
-
Step 900
900
#653113
oklch(37.7% 0.086 47.8)
-
Step 950
950
#3C1D0D
oklch(27% 0.055 46.6)
#B9581B 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) | #74660F | 0.129 |
| Deuteranopia (no green cones) | #8B7C18 | 0.117 |
| Tritanopia (no blue cones) | #CB424C | 0.080 |
| Achromatopsia (no color) | #747474 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B9581B
#B9581B
oklch(57.1% 0.143 47.7)
- #0084AB
#0084AB
oklch(57.2% 0.111 227.6)
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 #B9581B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.015
- Rust Orange #C45508 ΔE 0.021
- Burnt Orange #C04E01 ΔE 0.021
- Copper #B66325 ΔE 0.024
- Orangey Brown #B16002 ΔE 0.027
- Brick Orange #C14A09 ΔE 0.028
- Orange Brown #BE6400 ΔE 0.034
- Umber #B26400 ΔE 0.034
Use #B9581B 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.