#B0511B
Closest named color: Cinnamon (#AC4F06). oklch(54.7% 0.139 45.9), rgb(176, 81, 27).
Aa
White text reads best on this color (5.19:1).
About this color
#B0511B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.139 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Cinnamon (#AC4F06), ΔE 0.013 away. White text reads best on it, at 5.19:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.139) |
| Temperature | warm |
| Nearest name | Cinnamon (#AC4F06) |
| Black text | 4.03:1 |
| White text | 5.19:1 |
Values
| HEX | #B0511B |
| RGB | rgb(176, 81, 27) |
| HSL | hsl(22, 73%, 40%) |
| OKLCH | oklch(54.7% 0.139 45.9) |
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 #B0511B | 5.19:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #B0511B | 4.03:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #B0511B text on white | 5.19:1 | AA | Lc 75.2 | Fine for body text |
| #B0511B text on black | 4.03:1 | AA large text | Lc -26.6 | 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
#F5E6E0
oklch(93.5% 0.018 43.2)
-
Step 200
200
#EED3C6
oklch(88.6% 0.035 47.4)
-
Step 300
300
#E4B59F
oklch(81% 0.063 46.4)
-
Step 400
400
#D58C6A
oklch(70.7% 0.101 45.6)
-
Step 500
500
#C86E41
oklch(63.2% 0.129 46)
-
Step 600
600 (this color)
#B0511B
oklch(54.7% 0.139 45.9)
-
Step 700
700
#9A4410
oklch(49.2% 0.129 46.1)
-
Step 800
800
#7D3812
oklch(42.7% 0.108 45.7)
-
Step 900
900
#653117
oklch(37.7% 0.084 45.4)
-
Step 950
950
#3B1D0F
oklch(26.9% 0.053 44.9)
#B0511B 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) | #6C5F12 | 0.128 |
| Deuteranopia (no green cones) | #837518 | 0.117 |
| Tritanopia (no blue cones) | #C23B47 | 0.077 |
| Achromatopsia (no color) | #6D6D6D | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B0511B
#B0511B
oklch(54.7% 0.139 45.9)
- #007C9F
#007C9F
oklch(54.6% 0.105 226.3)
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 #B0511B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cinnamon #AC4F06 ΔE 0.013
- Burnt Siena #B75203 ΔE 0.017
- Burnt Orange #C04E01 ΔE 0.030
- Sienna #A0522D ΔE 0.032
- Brick Orange #C14A09 ΔE 0.032
- Raw Umber #A75E09 ΔE 0.037
- Sinopia #BB3E03 ΔE 0.037
- Orangey Brown #B16002 ΔE 0.039
Use #B0511B 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.