#B66735
Closest named color: Copper (#B66325). oklch(59.4% 0.12 50.8), rgb(182, 103, 53).
Aa
Black text reads best on this color (4.98:1).
About this color
#B66735 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 59%, its chroma 0.120 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.014 away. Black text reads best on it, at 4.98:1.
| Hue family | Browns |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.120) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #B66735 |
| RGB | rgb(182, 103, 53) |
| HSL | hsl(23, 55%, 46%) |
| OKLCH | oklch(59.4% 0.12 50.8) |
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 #B66735 | 4.21:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #B66735 | 4.98:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #B66735 text on white | 4.21:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #B66735 text on black | 4.98:1 | AA | Lc -32.9 | 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 500.
-
Step 50
50
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E7E0
oklch(93.6% 0.017 50.4)
-
Step 200
200
#ECD4C6
oklch(88.6% 0.033 52.3)
-
Step 300
300
#E1B69F
oklch(80.9% 0.059 49.6)
-
Step 400
400
#D08F6A
oklch(70.6% 0.094 50.3)
-
Step 500
500 (this color)
#B66735
oklch(59.4% 0.12 50.8)
-
Step 600
600
#AE591D
oklch(55.7% 0.131 50.9)
-
Step 700
700
#95480E
oklch(49.1% 0.122 50.7)
-
Step 800
800
#793C11
oklch(42.7% 0.1 50.9)
-
Step 900
900
#623416
oklch(37.8% 0.079 51.2)
-
Step 950
950
#391F0E
oklch(27% 0.049 52.4)
#B66735 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) | #7D7130 | 0.102 |
| Deuteranopia (no green cones) | #908234 | 0.092 |
| Tritanopia (no blue cones) | #C7575C | 0.074 |
| Achromatopsia (no color) | #7B7B7B | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B66735
#B66735
oklch(59.4% 0.12 50.8)
- #008AB8
#008AB8
oklch(59.4% 0.119 230.8)
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 #B66735, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.014
- Tiger's Eye #BC6C25 ΔE 0.023
- Clay Brown #B2713D ΔE 0.023
- Adobe #BD6C48 ΔE 0.025
- Clay #B66A50 ΔE 0.028
- Orange Brown #BE6400 ΔE 0.028
- Brown Orange #B96902 ΔE 0.030
- Umber #B26400 ΔE 0.030
Use #B66735 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.