#B66031
Closest named color: Copper (#B66325). oklch(58.2% 0.127 47.2), rgb(182, 96, 49).
Aa
Black text reads best on this color (4.70:1).
About this color
#B66031 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.127 and its hue 47°. 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 4.70:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.127) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #B66031 |
| RGB | rgb(182, 96, 49) |
| HSL | hsl(21, 58%, 45%) |
| OKLCH | oklch(58.2% 0.127 47.2) |
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 #B66031 | 4.46:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #B66031 | 4.70:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #B66031 text on white | 4.46:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #B66031 text on black | 4.70:1 | AA | Lc -31.1 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E7E1
oklch(93.7% 0.016 46.6)
-
Step 200
200
#ECD3C8
oklch(88.5% 0.032 45.3)
-
Step 300
300
#E1B6A2
oklch(80.9% 0.057 46.3)
-
Step 400
400
#D08F6F
oklch(70.7% 0.091 47)
-
Step 500
500
#C27248
oklch(63.2% 0.116 47.5)
-
Step 600
600 (this color)
#B66031
oklch(58.2% 0.127 47.2)
-
Step 700
700
#95481B
oklch(49.2% 0.118 47.3)
-
Step 800
800
#793B19
oklch(42.6% 0.098 46.8)
-
Step 900
900
#62331B
oklch(37.7% 0.077 46.4)
-
Step 950
950
#391F11
oklch(27% 0.047 48.2)
#B66031 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) | #786C2C | 0.113 |
| Deuteranopia (no green cones) | #8D7F30 | 0.103 |
| Tritanopia (no blue cones) | #C74E56 | 0.073 |
| Achromatopsia (no color) | #777777 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B66031
#B66031
oklch(58.2% 0.127 47.2)
- #0087AE
#0087AE
oklch(58.1% 0.112 227.1)
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 #B66031, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.014
- Orangey Brown #B16002 ΔE 0.029
- Umber #B26400 ΔE 0.032
- Orange Brown #BE6400 ΔE 0.033
- Rust Orange #C45508 ΔE 0.033
- Burnt Siena #B75203 ΔE 0.033
- Clay #B66A50 ΔE 0.034
- Adobe #BD6C48 ΔE 0.035
Use #B66031 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.