#BB5B00
Closest named color: Copper (#B66325). oklch(57.8% 0.148 52.4), rgb(187, 91, 0).
Aa
Black text reads best on this color (4.60:1).
About this color
#BB5B00 is a medium-dark, vivid orange. In OKLCH its lightness is 58%, its chroma 0.148 and its hue 52°. Its hue sits on the warm side of the wheel. The nearest named color is Copper (#B66325), ΔE 0.020 away. Black text reads best on it, at 4.60:1.
| Hue family | Oranges |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.148) |
| Temperature | warm |
| Nearest name | Copper (#B66325) |
| Black text | 4.60:1 |
| White text | 4.55:1 |
Values
| HEX | #BB5B00 |
| RGB | rgb(187, 91, 0) |
| HSL | hsl(29, 100%, 37%) |
| OKLCH | oklch(57.8% 0.148 52.4) |
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 #BB5B00 | 4.55:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #BB5B00 | 4.60:1 | AA | Lc 33.1 | Non-text elements, placeholder text |
| #BB5B00 text on white | 4.55:1 | AA | Lc 71.0 | Content text, not long reading |
| #BB5B00 text on black | 4.60:1 | AA | Lc -30.7 | 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
#FBF4F0
oklch(97.1% 0.009 52.1)
-
Step 100
100
#F5E7DE
oklch(93.7% 0.02 55.1)
-
Step 200
200
#EED3C3
oklch(88.5% 0.037 52.7)
-
Step 300
300
#E4B599
oklch(80.8% 0.067 52.3)
-
Step 400
400
#D58D60
oklch(70.7% 0.107 52.2)
-
Step 500
500
#C86F2F
oklch(63.1% 0.136 52.8)
-
Step 600
600 (this color)
#BB5B00
oklch(57.8% 0.148 52.4)
-
Step 700
700
#964800
oklch(49.2% 0.125 52.6)
-
Step 800
800
#7C3A00
oklch(42.8% 0.11 52.3)
-
Step 900
900
#65320A
oklch(37.8% 0.088 52.9)
-
Step 950
950
#3B1E09
oklch(27% 0.055 53.6)
#BB5B00 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) | #776800 | 0.125 |
| Deuteranopia (no green cones) | #8E7E00 | 0.113 |
| Tritanopia (no blue cones) | #CE444D | 0.091 |
| Achromatopsia (no color) | #767676 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB5B00
#BB5B00
oklch(57.8% 0.148 52.4)
- #0084B4
#0084B4
oklch(57.7% 0.119 233)
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 #BB5B00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Copper #B66325 ΔE 0.020
- Orangey Brown #B16002 ΔE 0.021
- Rust Orange #C45508 ΔE 0.021
- Orange Brown #BE6400 ΔE 0.022
- Burnt Siena #B75203 ΔE 0.023
- Umber #B26400 ΔE 0.025
- Burnt Orange #C04E01 ΔE 0.028
- Brown Orange #B96902 ΔE 0.032
Use #BB5B00 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.