#B35309
Closest named color: Burnt Siena (#B75203). oklch(55.4% 0.145 49.3), rgb(179, 83, 9).
Aa
White text reads best on this color (5.05:1).
About this color
#B35309 is a medium-dark, vivid orange. In OKLCH its lightness is 55%, its chroma 0.145 and its hue 49°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.007 away. White text reads best on it, at 5.05:1.
| Hue family | Oranges |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.145) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #B35309 |
| RGB | rgb(179, 83, 9) |
| HSL | hsl(26, 90%, 37%) |
| OKLCH | oklch(55.4% 0.145 49.3) |
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 #B35309 | 5.05:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #B35309 | 4.15:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #B35309 text on white | 5.05:1 | AA | Lc 74.2 | Content text, not long reading |
| #B35309 text on black | 4.15:1 | AA large text | Lc -27.5 | 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
#EED3C5
oklch(88.6% 0.036 49.2)
-
Step 300
300
#E4B59C
oklch(80.9% 0.065 49.4)
-
Step 400
400
#D58D65
oklch(70.8% 0.104 49.5)
-
Step 500
500
#C86E38
oklch(63.1% 0.133 49.3)
-
Step 600
600 (this color)
#B35309
oklch(55.4% 0.145 49.3)
-
Step 700
700
#994400
oklch(49% 0.131 49)
-
Step 800
800
#7D3804
oklch(42.6% 0.111 49.4)
-
Step 900
900
#653110
oklch(37.6% 0.087 49.3)
-
Step 950
950
#3B1D0C
oklch(26.9% 0.054 48.5)
#B35309 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) | #6F6100 | 0.128 |
| Deuteranopia (no green cones) | #867703 | 0.116 |
| Tritanopia (no blue cones) | #C53C47 | 0.084 |
| Achromatopsia (no color) | #6F6F6F | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B35309
#B35309
oklch(55.4% 0.145 49.3)
- #007EA6
#007EA6
oklch(55.5% 0.11 229.3)
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 #B35309, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.007
- Cinnamon #AC4F06 ΔE 0.017
- Burnt Orange #C04E01 ΔE 0.025
- Brick Orange #C14A09 ΔE 0.030
- Orangey Brown #B16002 ΔE 0.030
- Raw Umber #A75E09 ΔE 0.032
- Rust Orange #C45508 ΔE 0.034
- Copper #B66325 ΔE 0.036
Use #B35309 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.