#B75331
Closest named color: Burnt Siena (#B75203). oklch(56.3% 0.139 38.9), rgb(183, 83, 49).
Aa
White text reads best on this color (4.88:1).
About this color
#B75331 is a medium-dark, moderately saturated red. In OKLCH its lightness is 56%, its chroma 0.139 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.027 away. White text reads best on it, at 4.88:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.139) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.29:1 |
| White text | 4.88:1 |
Values
| HEX | #B75331 |
| RGB | rgb(183, 83, 49) |
| HSL | hsl(15, 58%, 45%) |
| OKLCH | oklch(56.3% 0.139 38.9) |
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 #B75331 | 4.88:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #B75331 | 4.29:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #B75331 text on white | 4.88:1 | AA | Lc 73.3 | Content text, not long reading |
| #B75331 text on black | 4.29:1 | AA large text | Lc -28.4 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EFD2C9
oklch(88.6% 0.035 38)
-
Step 300
300
#E5B4A3
oklch(81% 0.062 40)
-
Step 400
400
#D68B72
oklch(70.8% 0.099 39.2)
-
Step 500
500
#C96B4C
oklch(63% 0.128 38.9)
-
Step 600
600 (this color)
#B75331
oklch(56.3% 0.139 38.9)
-
Step 700
700
#9B4122
oklch(49.1% 0.128 38.8)
-
Step 800
800
#7E361E
oklch(42.7% 0.107 38.6)
-
Step 900
900
#66301E
oklch(37.8% 0.083 38.9)
-
Step 950
950
#3C1C12
oklch(26.9% 0.053 38.1)
#B75331 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) | #6E632D | 0.135 |
| Deuteranopia (no green cones) | #87792F | 0.123 |
| Tritanopia (no blue cones) | #C93E4C | 0.065 |
| Achromatopsia (no color) | #717171 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B75331
#B75331
oklch(56.3% 0.139 38.9)
- #00839D
#00839D
oklch(56.3% 0.101 218.3)
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 #B75331, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.027
- Brick Orange #C14A09 ΔE 0.028
- Burnt Orange #C04E01 ΔE 0.028
- Rust Orange #C45508 ΔE 0.035
- Cinnamon #AC4F06 ΔE 0.036
- Sinopia #BB3E03 ΔE 0.040
- Copper #B66325 ΔE 0.041
- Sienna #A0522D ΔE 0.045
Use #B75331 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.