#B3603F
Closest named color: Clay (#B66A50). oklch(57.9% 0.117 41.9), rgb(179, 96, 63).
Aa
Black text reads best on this color (4.66:1).
About this color
#B3603F is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.117 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Clay (#B66A50), ΔE 0.027 away. Black text reads best on it, at 4.66:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.117) |
| Temperature | warm |
| Nearest name | Clay (#B66A50) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #B3603F |
| RGB | rgb(179, 96, 63) |
| HSL | hsl(17, 48%, 47%) |
| OKLCH | oklch(57.9% 0.117 41.9) |
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 #B3603F | 4.50:1 | AA | Lc -76.4 | Fine for body text |
| Black text on #B3603F | 4.66:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #B3603F text on white | 4.50:1 | AA | Lc 70.9 | Content text, not long reading |
| #B3603F text on black | 4.66:1 | AA | Lc -30.8 | Non-text elements, placeholder text |
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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F3E7E2
oklch(93.6% 0.015 44.2)
-
Step 200
200
#EBD3CA
oklch(88.4% 0.03 41.7)
-
Step 300
300
#DFB6A6
oklch(80.8% 0.053 42.4)
-
Step 400
400
#CE8F77
oklch(70.7% 0.084 41.7)
-
Step 500
500
#C07254
oklch(63.1% 0.108 41.6)
-
Step 600
600 (this color)
#B3603F
oklch(57.9% 0.117 41.9)
-
Step 700
700
#93492B
oklch(49.2% 0.109 41.9)
-
Step 800
800
#773C24
oklch(42.6% 0.09 42.1)
-
Step 900
900
#613422
oklch(37.8% 0.071 42.1)
-
Step 950
950
#391F15
oklch(27.1% 0.044 41.6)
#B3603F 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) | #766C3C | 0.110 |
| Deuteranopia (no green cones) | #8A7E3E | 0.101 |
| Tritanopia (no blue cones) | #C35058 | 0.061 |
| Achromatopsia (no color) | #777777 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3603F
#B3603F
oklch(57.9% 0.117 41.9)
- #0088A7
#0088A7
oklch(58.1% 0.107 221.4)
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 #B3603F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clay #B66A50 ΔE 0.027
- Copper #B66325 ΔE 0.028
- Earth #A2653E ΔE 0.032
- Adobe #BD6C48 ΔE 0.036
- Orangey Brown #B16002 ΔE 0.041
- Burnt Siena #B75203 ΔE 0.042
- Clay Brown #B2713D ΔE 0.043
- Terra Cotta #C9643B ΔE 0.043
Use #B3603F 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.