#B64B11
Closest named color: Burnt Siena (#B75203). oklch(54.7% 0.153 43.5), rgb(182, 75, 17).
Aa
White text reads best on this color (5.24:1).
About this color
#B64B11 is a medium-dark, vivid orange. In OKLCH its lightness is 55%, its chroma 0.153 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.017 away. White text reads best on it, at 5.24:1.
| Hue family | Oranges |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #B64B11 |
| RGB | rgb(182, 75, 17) |
| HSL | hsl(21, 83%, 39%) |
| OKLCH | oklch(54.7% 0.153 43.5) |
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 #B64B11 | 5.24:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #B64B11 | 4.00:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #B64B11 text on white | 5.24:1 | AA | Lc 75.2 | Fine for body text |
| #B64B11 text on black | 4.00:1 | AA large text | Lc -26.5 | 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
#F6E6DF
oklch(93.6% 0.02 45.3)
-
Step 200
200
#F0D2C5
oklch(88.5% 0.038 44.8)
-
Step 300
300
#E8B39D
oklch(80.9% 0.069 43.6)
-
Step 400
400
#DA8967
oklch(70.7% 0.11 43.4)
-
Step 500
500
#CE693C
oklch(63.1% 0.141 43.4)
-
Step 600
600 (this color)
#B64B11
oklch(54.7% 0.153 43.5)
-
Step 700
700
#9F3E04
oklch(49.1% 0.142 43.6)
-
Step 800
800
#81340B
oklch(42.7% 0.117 43.6)
-
Step 900
900
#682E13
oklch(37.6% 0.092 43.5)
-
Step 950
950
#3D1C0D
oklch(27% 0.057 44)
#B64B11 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) | #6A5D02 | 0.146 |
| Deuteranopia (no green cones) | #84750A | 0.131 |
| Tritanopia (no blue cones) | #C93041 | 0.077 |
| Achromatopsia (no color) | #6C6C6C | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B64B11
#B64B11
oklch(54.7% 0.153 43.5)
- #007D9C
#007D9C
oklch(54.7% 0.102 223.1)
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 #B64B11, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.017
- Brick Orange #C14A09 ΔE 0.021
- Cinnamon #AC4F06 ΔE 0.021
- Burnt Orange #C04E01 ΔE 0.022
- Sinopia #BB3E03 ΔE 0.023
- Rust Orange #C45508 ΔE 0.037
- Sienna #A0522D ΔE 0.043
- Burnt Umber #A0450E ΔE 0.047
Use #B64B11 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.