#B35503
Closest named color: Burnt Siena (#B75203). oklch(55.7% 0.144 51), rgb(179, 85, 3).
Aa
White text reads best on this color (4.97:1).
About this color
#B35503 is a medium-dark, vivid orange. In OKLCH its lightness is 56%, its chroma 0.144 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.009 away. White text reads best on it, at 4.97:1.
| Hue family | Oranges |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.21:1 |
| White text | 4.97:1 |
Values
| HEX | #B35503 |
| RGB | rgb(179, 85, 3) |
| HSL | hsl(28, 97%, 36%) |
| OKLCH | oklch(55.7% 0.144 51) |
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 #B35503 | 4.97:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #B35503 | 4.21:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #B35503 text on white | 4.97:1 | AA | Lc 73.8 | Content text, not long reading |
| #B35503 text on black | 4.21:1 | 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
#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
#D48D63
oklch(70.6% 0.104 51)
-
Step 500
500
#C76F35
oklch(63.1% 0.132 51.3)
-
Step 600
600 (this color)
#B35503
oklch(55.7% 0.144 51)
-
Step 700
700
#974600
oklch(49% 0.128 50.9)
-
Step 800
800
#7D3901
oklch(42.8% 0.111 50.9)
-
Step 900
900
#65320F
oklch(37.8% 0.087 50.9)
-
Step 950
950
#3B1E0B
oklch(27.1% 0.054 51.6)
#B35503 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) | #716200 | 0.123 |
| Deuteranopia (no green cones) | #877800 | 0.113 |
| Tritanopia (no blue cones) | #C53F48 | 0.086 |
| Achromatopsia (no color) | #707070 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B35503
#B35503
oklch(55.7% 0.144 51)
- #007EA9
#007EA9
oklch(55.6% 0.112 231.2)
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 #B35503, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.009
- Cinnamon #AC4F06 ΔE 0.021
- Orangey Brown #B16002 ΔE 0.025
- Burnt Orange #C04E01 ΔE 0.027
- Raw Umber #A75E09 ΔE 0.028
- Copper #B66325 ΔE 0.033
- Rust Orange #C45508 ΔE 0.033
- Brick Orange #C14A09 ΔE 0.033
Use #B35503 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.