#B55020
Closest named color: Burnt Siena (#B75203). oklch(55.3% 0.144 43.1), rgb(181, 80, 32).
Aa
White text reads best on this color (5.08:1).
About this color
#B55020 is a medium-dark, vivid orange. In OKLCH its lightness is 55%, its chroma 0.144 and its hue 43°. 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 5.08:1.
| Hue family | Oranges |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.13:1 |
| White text | 5.08:1 |
Values
| HEX | #B55020 |
| RGB | rgb(181, 80, 32) |
| HSL | hsl(19, 70%, 42%) |
| OKLCH | oklch(55.3% 0.144 43.1) |
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 #B55020 | 5.08:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #B55020 | 4.13:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #B55020 text on white | 5.08:1 | AA | Lc 74.4 | Content text, not long reading |
| #B55020 text on black | 4.13:1 | AA large text | Lc -27.3 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#EFD2C7
oklch(88.5% 0.036 41.9)
-
Step 300
300
#E6B4A0
oklch(81% 0.065 42.9)
-
Step 400
400
#D78B6B
oklch(70.7% 0.104 43.5)
-
Step 500
500
#CA6B43
oklch(63% 0.132 42.7)
-
Step 600
600 (this color)
#B55020
oklch(55.3% 0.144 43.1)
-
Step 700
700
#9C4113
oklch(49.1% 0.133 43.2)
-
Step 800
800
#7F3613
oklch(42.7% 0.111 43.2)
-
Step 900
900
#663018
oklch(37.7% 0.086 43.3)
-
Step 950
950
#3C1C0F
oklch(26.9% 0.055 42.2)
#B55020 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) | #6D6019 | 0.136 |
| Deuteranopia (no green cones) | #85771D | 0.125 |
| Tritanopia (no blue cones) | #C73946 | 0.072 |
| Achromatopsia (no color) | #6E6E6E | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B55020
#B55020
oklch(55.3% 0.144 43.1)
- #007F9E
#007F9E
oklch(55.3% 0.103 222.8)
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 #B55020, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.015
- Burnt Orange #C04E01 ΔE 0.023
- Cinnamon #AC4F06 ΔE 0.023
- Brick Orange #C14A09 ΔE 0.024
- Sinopia #BB3E03 ΔE 0.032
- Rust Orange #C45508 ΔE 0.034
- Sienna #A0522D ΔE 0.040
- Orangey Brown #B16002 ΔE 0.043
Use #B55020 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.