#BB5703
Closest named color: Burnt Siena (#B75203). oklch(57.2% 0.15 49.9), rgb(187, 87, 3).
Aa
White text reads best on this color (4.69:1).
About this color
#BB5703 is a medium-dark, vivid orange. In OKLCH its lightness is 57%, its chroma 0.150 and its hue 50°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.014 away. White text reads best on it, at 4.69:1.
| Hue family | Oranges |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.47:1 |
| White text | 4.69:1 |
Values
| HEX | #BB5703 |
| RGB | rgb(187, 87, 3) |
| HSL | hsl(27, 97%, 37%) |
| OKLCH | oklch(57.2% 0.15 49.9) |
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 #BB5703 | 4.69:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #BB5703 | 4.47:1 | AA large text | Lc 32.2 | Non-text elements, placeholder text |
| #BB5703 text on white | 4.69:1 | AA | Lc 71.9 | Content text, not long reading |
| #BB5703 text on black | 4.47:1 | 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
#EFD3C4
oklch(88.6% 0.037 50)
-
Step 300
300
#E5B59A
oklch(80.9% 0.067 50.8)
-
Step 400
400
#D78C61
oklch(70.7% 0.109 50.1)
-
Step 500
500
#CA6D32
oklch(63.1% 0.138 50.1)
-
Step 600
600 (this color)
#BB5703
oklch(57.2% 0.15 49.9)
-
Step 700
700
#984500
oklch(49% 0.13 50)
-
Step 800
800
#7E3800
oklch(42.8% 0.113 50)
-
Step 900
900
#66310C
oklch(37.7% 0.089 50.6)
-
Step 950
950
#3C1D0A
oklch(27% 0.057 49.8)
#BB5703 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) | #746600 | 0.132 |
| Deuteranopia (no green cones) | #8D7D00 | 0.120 |
| Tritanopia (no blue cones) | #CE3F4A | 0.088 |
| Achromatopsia (no color) | #747474 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB5703
#BB5703
oklch(57.2% 0.15 49.9)
- #0083AE
#0083AE
oklch(57.1% 0.114 230.3)
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 #BB5703, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.014
- Rust Orange #C45508 ΔE 0.017
- Burnt Orange #C04E01 ΔE 0.019
- Orangey Brown #B16002 ΔE 0.026
- Copper #B66325 ΔE 0.026
- Brick Orange #C14A09 ΔE 0.028
- Orange Brown #BE6400 ΔE 0.031
- Umber #B26400 ΔE 0.033
Use #BB5703 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.