#B45708
Closest named color: Burnt Siena (#B75203). oklch(56.2% 0.143 51.3), rgb(180, 87, 8).
Aa
White text reads best on this color (4.87:1).
About this color
#B45708 is a medium-dark, vivid orange. In OKLCH its lightness is 56%, its chroma 0.143 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.011 away. White text reads best on it, at 4.87:1.
| Hue family | Oranges |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.30:1 |
| White text | 4.87:1 |
Values
| HEX | #B45708 |
| RGB | rgb(180, 87, 8) |
| HSL | hsl(28, 91%, 37%) |
| OKLCH | oklch(56.2% 0.143 51.3) |
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 #B45708 | 4.87:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #B45708 | 4.30:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #B45708 text on white | 4.87:1 | AA | Lc 73.2 | Content text, not long reading |
| #B45708 text on black | 4.30:1 | AA large text | Lc -28.5 | 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
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F5E7DF
oklch(93.7% 0.019 52)
-
Step 200
200
#EDD3C4
oklch(88.4% 0.036 52)
-
Step 300
300
#E3B69B
oklch(81% 0.064 52.5)
-
Step 400
400
#D48E64
oklch(70.8% 0.103 51.4)
-
Step 500
500
#C76F36
oklch(63.1% 0.132 51)
-
Step 600
600 (this color)
#B45708
oklch(56.2% 0.143 51.3)
-
Step 700
700
#974700
oklch(49.2% 0.127 51.6)
-
Step 800
800
#7C3901
oklch(42.6% 0.11 51.3)
-
Step 900
900
#64320F
oklch(37.6% 0.085 51.4)
-
Step 950
950
#3B1E0B
oklch(27.1% 0.054 51.6)
#B45708 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) | #726400 | 0.123 |
| Deuteranopia (no green cones) | #897903 | 0.110 |
| Tritanopia (no blue cones) | #C6414A | 0.086 |
| Achromatopsia (no color) | #717171 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B45708
#B45708
oklch(56.2% 0.143 51.3)
- #0080AB
#0080AB
oklch(56.2% 0.113 230.8)
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 #B45708, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.011
- Orangey Brown #B16002 ΔE 0.022
- Cinnamon #AC4F06 ΔE 0.025
- Burnt Orange #C04E01 ΔE 0.027
- Raw Umber #A75E09 ΔE 0.028
- Copper #B66325 ΔE 0.028
- Rust Orange #C45508 ΔE 0.030
- Umber #B26400 ΔE 0.031
Use #B45708 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.