#B75129
Closest named color: Burnt Siena (#B75203). oklch(55.9% 0.143 40.6), rgb(183, 81, 41).
Aa
White text reads best on this color (4.97:1).
About this color
#B75129 is a medium-dark, vivid orange. In OKLCH its lightness is 56%, its chroma 0.143 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.021 away. White text reads best on it, at 4.97:1.
| Hue family | Oranges |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.22:1 |
| White text | 4.97:1 |
Values
| HEX | #B75129 |
| RGB | rgb(183, 81, 41) |
| HSL | hsl(17, 63%, 44%) |
| OKLCH | oklch(55.9% 0.143 40.6) |
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 #B75129 | 4.97:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #B75129 | 4.22:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #B75129 text on white | 4.97:1 | AA | Lc 73.8 | Content text, not long reading |
| #B75129 text on black | 4.22:1 | AA large text | Lc -27.9 | 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
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#EFD2C8
oklch(88.5% 0.035 40)
-
Step 300
300
#E6B3A1
oklch(80.8% 0.065 40.3)
-
Step 400
400
#D78A6E
oklch(70.6% 0.103 40.7)
-
Step 500
500
#CB6B47
oklch(63.2% 0.132 40.8)
-
Step 600
600 (this color)
#B75129
oklch(55.9% 0.143 40.6)
-
Step 700
700
#9C401B
oklch(49% 0.132 40.5)
-
Step 800
800
#7F3619
oklch(42.8% 0.109 40.8)
-
Step 900
900
#662F1B
oklch(37.6% 0.085 40.1)
-
Step 950
950
#3C1C10
oklch(26.9% 0.054 40.9)
#B75129 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) | #6D6224 | 0.139 |
| Deuteranopia (no green cones) | #867826 | 0.126 |
| Tritanopia (no blue cones) | #C93A49 | 0.069 |
| Achromatopsia (no color) | #707070 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B75129
#B75129
oklch(55.9% 0.143 40.6)
- #00819E
#00819E
oklch(55.9% 0.102 220.9)
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 #B75129, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.021
- Brick Orange #C14A09 ΔE 0.024
- Burnt Orange #C04E01 ΔE 0.024
- Cinnamon #AC4F06 ΔE 0.031
- Rust Orange #C45508 ΔE 0.033
- Sinopia #BB3E03 ΔE 0.035
- Copper #B66325 ΔE 0.042
- Sienna #A0522D ΔE 0.043
Use #B75129 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.