#BB5D37
Closest named color: Copper (#B66325). oklch(58.5% 0.132 41.8), rgb(187, 93, 55).
Aa
Black text reads best on this color (4.73:1).
About this color
#BB5D37 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.132 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.026 away. Black text reads best on it, at 4.73:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.132) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #BB5D37 |
| RGB | rgb(187, 93, 55) |
| HSL | hsl(17, 55%, 47%) |
| OKLCH | oklch(58.5% 0.132 41.8) |
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 #BB5D37 | 4.43:1 | AA large text | Lc -75.8 | Fine for body text |
| Black text on #BB5D37 | 4.73:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #BB5D37 text on white | 4.43:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #BB5D37 text on black | 4.73:1 | 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
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EDD3C9
oklch(88.6% 0.032 42.2)
-
Step 300
300
#E3B5A3
oklch(81% 0.059 42.4)
-
Step 400
400
#D38D71
oklch(70.7% 0.095 42.6)
-
Step 500
500
#C66E4C
oklch(63.1% 0.122 41.5)
-
Step 600
600 (this color)
#BB5D37
oklch(58.5% 0.132 41.8)
-
Step 700
700
#984421
oklch(49% 0.123 41.6)
-
Step 800
800
#7C391D
oklch(42.8% 0.102 42)
-
Step 900
900
#64311D
oklch(37.6% 0.08 41.5)
-
Step 950
950
#3B1D12
oklch(27% 0.051 40.6)
#BB5D37 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) | #776B33 | 0.124 |
| Deuteranopia (no green cones) | #8D8035 | 0.115 |
| Tritanopia (no blue cones) | #CD4A54 | 0.067 |
| Achromatopsia (no color) | #787878 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB5D37
#BB5D37
oklch(58.5% 0.132 41.8)
- #0089A9
#0089A9
oklch(58.4% 0.108 221.9)
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 #BB5D37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.026
- Rust Orange #C45508 ΔE 0.030
- Terra Cotta #C9643B ΔE 0.033
- Clay #B66A50 ΔE 0.033
- Adobe #BD6C48 ΔE 0.035
- Burnt Siena #B75203 ΔE 0.036
- Burnt Orange #C04E01 ΔE 0.036
- Terracotta #CA6641 ΔE 0.037
Use #BB5D37 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.