#B4603B
Closest named color: Copper (#B66325). oklch(58% 0.12 43.6), rgb(180, 96, 59).
Aa
Black text reads best on this color (4.67:1).
About this color
#B4603B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.120 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.023 away. Black text reads best on it, at 4.67:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.120) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.67:1 |
| White text | 4.49:1 |
Values
| HEX | #B4603B |
| RGB | rgb(180, 96, 59) |
| HSL | hsl(18, 51%, 47%) |
| OKLCH | oklch(58% 0.12 43.6) |
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 #B4603B | 4.49:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #B4603B | 4.67:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #B4603B text on white | 4.49:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #B4603B text on black | 4.67:1 | AA | Lc -30.9 | 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
#F4E7E2
oklch(93.7% 0.016 42.4)
-
Step 200
200
#EBD3CA
oklch(88.4% 0.03 41.7)
-
Step 300
300
#E0B6A5
oklch(80.9% 0.054 43.2)
-
Step 400
400
#CF8F74
oklch(70.7% 0.087 43.7)
-
Step 500
500
#C17250
oklch(63.1% 0.111 43.6)
-
Step 600
600 (this color)
#B4603B
oklch(58% 0.12 43.6)
-
Step 700
700
#934826
oklch(49% 0.112 43.6)
-
Step 800
800
#783C21
oklch(42.8% 0.093 43.7)
-
Step 900
900
#613420
oklch(37.8% 0.072 44)
-
Step 950
950
#391F13
oklch(27.1% 0.046 45.1)
#B4603B 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) | #776C37 | 0.110 |
| Deuteranopia (no green cones) | #8B7E3A | 0.101 |
| Tritanopia (no blue cones) | #C55057 | 0.064 |
| Achromatopsia (no color) | #777777 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4603B
#B4603B
oklch(58% 0.12 43.6)
- #0087A9
#0087A9
oklch(57.9% 0.108 223.7)
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 #B4603B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.023
- Clay #B66A50 ΔE 0.029
- Earth #A2653E ΔE 0.033
- Adobe #BD6C48 ΔE 0.035
- Orangey Brown #B16002 ΔE 0.037
- Burnt Siena #B75203 ΔE 0.039
- Rust Orange #C45508 ΔE 0.040
- Umber #B26400 ΔE 0.041
Use #B4603B 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.