#B0643B
Closest named color: Copper (#B66325). oklch(58.2% 0.113 47.8), rgb(176, 100, 59).
Aa
Black text reads best on this color (4.73:1).
About this color
#B0643B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.113 and its hue 48°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.021 away. Black text reads best on it, at 4.73:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.113) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #B0643B |
| RGB | rgb(176, 100, 59) |
| HSL | hsl(21, 50%, 46%) |
| OKLCH | oklch(58.2% 0.113 47.8) |
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 #B0643B | 4.43:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #B0643B | 4.73:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #B0643B text on white | 4.43:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #B0643B text on black | 4.73:1 | AA | Lc -31.2 | 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
#EAD4C9
oklch(88.5% 0.029 48.4)
-
Step 300
300
#DDB7A5
oklch(80.8% 0.051 46.8)
-
Step 400
400
#CB9174
oklch(70.6% 0.082 47.5)
-
Step 500
500
#BC7550
oklch(63% 0.103 47.7)
-
Step 600
600 (this color)
#B0643B
oklch(58.2% 0.113 47.8)
-
Step 700
700
#904C26
oklch(49.2% 0.105 47.8)
-
Step 800
800
#753E21
oklch(42.7% 0.087 47)
-
Step 900
900
#5E3620
oklch(37.7% 0.067 48.6)
-
Step 950
950
#372013
oklch(27% 0.042 49.7)
#B0643B 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) | #796D37 | 0.098 |
| Deuteranopia (no green cones) | #8B7E3A | 0.090 |
| Tritanopia (no blue cones) | #C0555B | 0.067 |
| Achromatopsia (no color) | #787878 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B0643B
#B0643B
oklch(58.2% 0.113 47.8)
- #0287AF
#0287AF
oklch(58.2% 0.113 227.8)
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 #B0643B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.021
- Earth #A2653E ΔE 0.025
- Clay #B66A50 ΔE 0.028
- Clay Brown #B2713D ΔE 0.033
- Orangey Brown #B16002 ΔE 0.034
- Adobe #BD6C48 ΔE 0.034
- Umber #B26400 ΔE 0.036
- Tiger's Eye #BC6C25 ΔE 0.039
Use #B0643B 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.