#B16637
Closest named color: Copper (#B66325). oklch(58.6% 0.115 50.9), rgb(177, 102, 55).
Aa
Black text reads best on this color (4.82:1).
About this color
#B16637 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 59%, its chroma 0.115 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.016 away. Black text reads best on it, at 4.82:1.
| Hue family | Browns |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.115) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #B16637 |
| RGB | rgb(177, 102, 55) |
| HSL | hsl(23, 53%, 45%) |
| OKLCH | oklch(58.6% 0.115 50.9) |
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 #B16637 | 4.35:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #B16637 | 4.82:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #B16637 text on white | 4.35:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #B16637 text on black | 4.82:1 | AA | Lc -31.8 | 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
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F3E7E1
oklch(93.6% 0.015 48.6)
-
Step 200
200
#EAD4C9
oklch(88.5% 0.029 48.4)
-
Step 300
300
#DDB8A3
oklch(81% 0.052 51.3)
-
Step 400
400
#CB9271
oklch(70.8% 0.083 51)
-
Step 500
500
#BC764C
oklch(63.2% 0.105 50.9)
-
Step 600
600 (this color)
#B16637
oklch(58.6% 0.115 50.9)
-
Step 700
700
#8F4C20
oklch(49% 0.107 50.8)
-
Step 800
800
#743F1D
oklch(42.6% 0.088 50.9)
-
Step 900
900
#5E361D
oklch(37.7% 0.069 51.3)
-
Step 950
950
#372012
oklch(27% 0.043 51.4)
#B16637 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) | #7B6F32 | 0.096 |
| Deuteranopia (no green cones) | #8D8036 | 0.089 |
| Tritanopia (no blue cones) | #C1575B | 0.070 |
| Achromatopsia (no color) | #797979 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B16637
#B16637
oklch(58.6% 0.115 50.9)
- #1087B3
#1087B3
oklch(58.5% 0.114 231)
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 #B16637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.016
- Clay Brown #B2713D ΔE 0.027
- Earth #A2653E ΔE 0.028
- Clay #B66A50 ΔE 0.029
- Orangey Brown #B16002 ΔE 0.030
- Umber #B26400 ΔE 0.030
- Tiger's Eye #BC6C25 ΔE 0.031
- Adobe #BD6C48 ΔE 0.032
Use #B16637 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.