#BB5718
Closest named color: Burnt Siena (#B75203). oklch(57.3% 0.147 47.3), rgb(187, 87, 24).
Aa
White text reads best on this color (4.67:1).
About this color
#BB5718 is a medium-dark, vivid orange. In OKLCH its lightness is 57%, its chroma 0.147 and its hue 47°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.015 away. White text reads best on it, at 4.67:1.
| Hue family | Oranges |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.48:1 |
| White text | 4.67:1 |
Values
| HEX | #BB5718 |
| RGB | rgb(187, 87, 24) |
| HSL | hsl(23, 77%, 41%) |
| OKLCH | oklch(57.3% 0.147 47.3) |
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 #BB5718 | 4.67:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #BB5718 | 4.48:1 | AA large text | Lc 32.2 | Non-text elements, placeholder text |
| #BB5718 text on white | 4.67:1 | AA | Lc 71.8 | Content text, not long reading |
| #BB5718 text on black | 4.48:1 | AA large text | Lc -29.8 | Dividers and decoration only |
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
#F5E6DF
oklch(93.5% 0.019 46.8)
-
Step 200
200
#EFD2C5
oklch(88.4% 0.037 45.6)
-
Step 300
300
#E5B49C
oklch(80.8% 0.066 47.4)
-
Step 400
400
#D78C66
oklch(70.8% 0.106 47.4)
-
Step 500
500
#CA6C3A
oklch(63% 0.135 46.8)
-
Step 600
600 (this color)
#BB5718
oklch(57.3% 0.147 47.3)
-
Step 700
700
#9B4200
oklch(49% 0.135 47.3)
-
Step 800
800
#7F3707
oklch(42.8% 0.113 47.2)
-
Step 900
900
#663012
oklch(37.6% 0.088 46.8)
-
Step 950
950
#3C1D0C
oklch(27% 0.056 47.7)
#BB5718 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) | #74660A | 0.133 |
| Deuteranopia (no green cones) | #8C7D14 | 0.121 |
| Tritanopia (no blue cones) | #CE404B | 0.081 |
| Achromatopsia (no color) | #747474 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB5718
#BB5718
oklch(57.3% 0.147 47.3)
- #0084AB
#0084AB
oklch(57.2% 0.111 227.6)
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 #BB5718, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.015
- Rust Orange #C45508 ΔE 0.017
- Burnt Orange #C04E01 ΔE 0.018
- Brick Orange #C14A09 ΔE 0.026
- Copper #B66325 ΔE 0.026
- Orangey Brown #B16002 ΔE 0.030
- Orange Brown #BE6400 ΔE 0.034
- Rusty Orange #CD5909 ΔE 0.035
Use #BB5718 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.