#B66133
Closest named color: Copper (#B66325). oklch(58.4% 0.125 47.2), rgb(182, 97, 51).
Aa
Black text reads best on this color (4.74:1).
About this color
#B66133 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.125 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 4.74:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.125) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.74:1 |
| White text | 4.42:1 |
Values
| HEX | #B66133 |
| RGB | rgb(182, 97, 51) |
| HSL | hsl(21, 56%, 46%) |
| OKLCH | oklch(58.4% 0.125 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 #B66133 | 4.42:1 | AA large text | Lc -75.8 | Fine for body text |
| Black text on #B66133 | 4.74:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #B66133 text on white | 4.42:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #B66133 text on black | 4.74:1 | AA | Lc -31.4 | 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
#E0B6A2
oklch(80.8% 0.056 46.8)
-
Step 400
400
#CF8F6F
oklch(70.6% 0.09 47.4)
-
Step 500
500
#C17249
oklch(63% 0.114 47.3)
-
Step 600
600 (this color)
#B66133
oklch(58.4% 0.125 47.2)
-
Step 700
700
#94481D
oklch(49% 0.116 47)
-
Step 800
800
#783C1A
oklch(42.7% 0.096 47.6)
-
Step 900
900
#61341C
oklch(37.7% 0.074 47.4)
-
Step 950
950
#391F11
oklch(27% 0.047 48.2)
#B66133 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) | #796C2E | 0.110 |
| Deuteranopia (no green cones) | #8D7F32 | 0.101 |
| Tritanopia (no blue cones) | #C75057 | 0.071 |
| Achromatopsia (no color) | #787878 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B66133
#B66133
oklch(58.4% 0.125 47.2)
- #0088AF
#0088AF
oklch(58.4% 0.113 226.9)
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 #B66133, 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 0.030
- Clay #B66A50 ΔE 0.032
- Orange Brown #BE6400 ΔE 0.033
- Umber #B26400 ΔE 0.033
- Adobe #BD6C48 ΔE 0.033
- Tiger's Eye #BC6C25 ΔE 0.035
- Rust Orange #C45508 ΔE 0.035
Use #B66133 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.