#BB631C
Closest named color: Copper (#B66325). oklch(59.2% 0.137 53.6), rgb(187, 99, 28).
Aa
Black text reads best on this color (4.91:1).
About this color
#BB631C is a medium-dark, moderately saturated brown. In OKLCH its lightness is 59%, its chroma 0.137 and its hue 54°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.010 away. Black text reads best on it, at 4.91:1.
| Hue family | Browns |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.137) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #BB631C |
| RGB | rgb(187, 99, 28) |
| HSL | hsl(27, 74%, 42%) |
| OKLCH | oklch(59.2% 0.137 53.6) |
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 #BB631C | 4.27:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #BB631C | 4.91:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #BB631C text on white | 4.27:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #BB631C text on black | 4.91:1 | AA | Lc -32.6 | 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
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F4E7DF
oklch(93.6% 0.018 54)
-
Step 200
200
#ECD4C5
oklch(88.6% 0.034 54.1)
-
Step 300
300
#E1B69C
oklch(80.8% 0.061 52.7)
-
Step 400
400
#D18F64
oklch(70.6% 0.099 53.5)
-
Step 500
500
#C47237
oklch(63.2% 0.127 53.7)
-
Step 600
600 (this color)
#BB631C
oklch(59.2% 0.137 53.6)
-
Step 700
700
#954900
oklch(49.2% 0.124 53.7)
-
Step 800
800
#7A3B03
oklch(42.6% 0.106 53.3)
-
Step 900
900
#633310
oklch(37.7% 0.083 52.7)
-
Step 950
950
#3A1F0B
oklch(27.1% 0.052 54.8)
#BB631C 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) | #7D6E0E | 0.114 |
| Deuteranopia (no green cones) | #92821B | 0.102 |
| Tritanopia (no blue cones) | #CD4F56 | 0.088 |
| Achromatopsia (no color) | #7A7A7A | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB631C
#BB631C
oklch(59.2% 0.137 53.6)
- #0089BB
#0089BB
oklch(59.3% 0.123 233.2)
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 #BB631C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.010
- Orange Brown #BE6400 ΔE 0.012
- Brown Orange #B96902 ΔE 0.020
- Tiger's Eye #BC6C25 ΔE 0.021
- Umber #B26400 ΔE 0.021
- Orangey Brown #B16002 ΔE 0.023
- Rust Orange #C45508 ΔE 0.031
- Rust #CA6702 ΔE 0.031
Use #BB631C 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.