#B6521C
Closest named color: Burnt Siena (#B75203). oklch(55.8% 0.145 44.9), rgb(182, 82, 28).
Aa
White text reads best on this color (4.98:1).
About this color
#B6521C is a medium-dark, vivid orange. In OKLCH its lightness is 56%, its chroma 0.145 and its hue 45°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.010 away. White text reads best on it, at 4.98:1.
| Hue family | Oranges |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.145) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.21:1 |
| White text | 4.98:1 |
Values
| HEX | #B6521C |
| RGB | rgb(182, 82, 28) |
| HSL | hsl(21, 73%, 41%) |
| OKLCH | oklch(55.8% 0.145 44.9) |
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 #B6521C | 4.98:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #B6521C | 4.21:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #B6521C text on white | 4.98:1 | AA | Lc 73.8 | Content text, not long reading |
| #B6521C text on black | 4.21:1 | AA large text | Lc -27.9 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E6E0
oklch(93.5% 0.018 43.2)
-
Step 200
200
#EFD2C6
oklch(88.5% 0.037 43.8)
-
Step 300
300
#E5B49E
oklch(80.9% 0.065 45.4)
-
Step 400
400
#D78B69
oklch(70.7% 0.105 44.7)
-
Step 500
500
#CA6C3F
oklch(63.1% 0.133 45)
-
Step 600
600 (this color)
#B6521C
oklch(55.8% 0.145 44.9)
-
Step 700
700
#9C410C
oklch(49.1% 0.135 44.6)
-
Step 800
800
#7F370F
oklch(42.8% 0.111 45.2)
-
Step 900
900
#663015
oklch(37.7% 0.087 45.1)
-
Step 950
950
#3C1D0E
oklch(27.1% 0.055 45.4)
#B6521C 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) | #6F6213 | 0.134 |
| Deuteranopia (no green cones) | #877818 | 0.122 |
| Tritanopia (no blue cones) | #C83B48 | 0.077 |
| Achromatopsia (no color) | #707070 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B6521C
#B6521C
oklch(55.8% 0.145 44.9)
- #0080A2
#0080A2
oklch(55.8% 0.106 224.8)
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 #B6521C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.010
- Burnt Orange #C04E01 ΔE 0.020
- Brick Orange #C14A09 ΔE 0.023
- Cinnamon #AC4F06 ΔE 0.024
- Rust Orange #C45508 ΔE 0.030
- Sinopia #BB3E03 ΔE 0.036
- Orangey Brown #B16002 ΔE 0.037
- Copper #B66325 ΔE 0.037
Use #B6521C 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.