#BB5B39
Closest named color: Copper (#B66325). oklch(58.2% 0.133 39.7), rgb(187, 91, 57).
Aa
Black text reads best on this color (4.66:1).
About this color
#BB5B39 is a medium-dark, moderately saturated red. In OKLCH its lightness is 58%, its chroma 0.133 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.031 away. Black text reads best on it, at 4.66:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.133) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.66:1 |
| White text | 4.49:1 |
Values
| HEX | #BB5B39 |
| RGB | rgb(187, 91, 57) |
| HSL | hsl(16, 53%, 48%) |
| OKLCH | oklch(58.2% 0.133 39.7) |
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 #BB5B39 | 4.49:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #BB5B39 | 4.66:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #BB5B39 text on white | 4.49:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #BB5B39 text on black | 4.66:1 | AA | Lc -31.0 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EED2C9
oklch(88.5% 0.034 38.6)
-
Step 300
300
#E4B4A4
oklch(80.9% 0.06 39.2)
-
Step 400
400
#D48C73
oklch(70.7% 0.095 39.9)
-
Step 500
500
#C76D4E
oklch(63.1% 0.123 39.6)
-
Step 600
600 (this color)
#BB5B39
oklch(58.2% 0.133 39.7)
-
Step 700
700
#994324
oklch(49.1% 0.124 39.6)
-
Step 800
800
#7C381F
oklch(42.7% 0.102 40.1)
-
Step 900
900
#64311F
oklch(37.7% 0.079 39.9)
-
Step 950
950
#3B1D13
oklch(27% 0.05 39.1)
#BB5B39 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) | #756A35 | 0.128 |
| Deuteranopia (no green cones) | #8C7F37 | 0.118 |
| Tritanopia (no blue cones) | #CD4853 | 0.064 |
| Achromatopsia (no color) | #777777 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB5B39
#BB5B39
oklch(58.2% 0.133 39.7)
- #0089A6
#0089A6
oklch(58.3% 0.106 219.7)
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 #BB5B39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.031
- Rust Orange #C45508 ΔE 0.032
- Burnt Orange #C04E01 ΔE 0.035
- Clay #B66A50 ΔE 0.035
- Terra Cotta #C9643B ΔE 0.035
- Burnt Siena #B75203 ΔE 0.036
- Brick Orange #C14A09 ΔE 0.038
- Adobe #BD6C48 ΔE 0.039
Use #BB5B39 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.