#B05311
Closest named color: Cinnamon (#AC4F06). oklch(55% 0.14 49), rgb(176, 83, 17).
Aa
White text reads best on this color (5.13:1).
About this color
#B05311 is a medium-dark, vivid orange. In OKLCH its lightness is 55%, its chroma 0.140 and its hue 49°. 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 5.13:1.
| Hue family | Oranges |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.140) |
| Temperature | warm |
| Nearest name | Cinnamon (#AC4F06) |
| Black text | 4.09:1 |
| White text | 5.13:1 |
Values
| HEX | #B05311 |
| RGB | rgb(176, 83, 17) |
| HSL | hsl(25, 82%, 38%) |
| OKLCH | oklch(55% 0.14 49) |
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 #B05311 | 5.13:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #B05311 | 4.09:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #B05311 text on white | 5.13:1 | AA | Lc 74.8 | Content text, not long reading |
| #B05311 text on black | 4.09:1 | AA large text | Lc -26.9 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F5E7DF
oklch(93.7% 0.019 52)
-
Step 200
200
#EDD3C5
oklch(88.5% 0.035 50.2)
-
Step 300
300
#E3B59D
oklch(80.8% 0.063 49)
-
Step 400
400
#D48D67
oklch(70.7% 0.101 48.7)
-
Step 500
500
#C76F3C
oklch(63.1% 0.129 48.9)
-
Step 600
600 (this color)
#B05311
oklch(55% 0.14 49)
-
Step 700
700
#994503
oklch(49.2% 0.13 49.2)
-
Step 800
800
#7C390A
oklch(42.7% 0.108 49.1)
-
Step 900
900
#643213
oklch(37.7% 0.084 49.4)
-
Step 950
950
#3B1E0D
oklch(27.1% 0.053 49.4)
#B05311 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) | #6E6100 | 0.125 |
| Deuteranopia (no green cones) | #85760D | 0.113 |
| Tritanopia (no blue cones) | #C23D47 | 0.081 |
| Achromatopsia (no color) | #6E6E6E | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B05311
#B05311
oklch(55% 0.14 49)
- #007CA4
#007CA4
oklch(54.9% 0.109 229.7)
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 #B05311, 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 0.013
- Burnt Orange #C04E01 ΔE 0.030
- Raw Umber #A75E09 ΔE 0.030
- Orangey Brown #B16002 ΔE 0.032
- Brick Orange #C14A09 ΔE 0.034
- Sienna #A0522D ΔE 0.035
- Copper #B66325 ΔE 0.039
Use #B05311 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.