#A03F00
Closest named color: Burnt Umber (#A0450E). oklch(49.4% 0.143 44.5), rgb(160, 63, 0).
Aa
White text reads best on this color (6.55:1).
About this color
#A03F00 is a medium-dark, vivid orange. In OKLCH its lightness is 49%, its chroma 0.143 and its hue 44°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.012 away. White text reads best on it, at 6.55:1.
| Hue family | Oranges |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #A03F00 |
| RGB | rgb(160, 63, 0) |
| HSL | hsl(24, 100%, 31%) |
| OKLCH | oklch(49.4% 0.143 44.5) |
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 #A03F00 | 6.55:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #A03F00 | 3.20:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #A03F00 text on white | 6.55:1 | AA | Lc 81.6 | Fine for body text |
| #A03F00 text on black | 3.20:1 | AA large text | Lc -20.3 | 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 700.
-
Step 50
50
#FBF4F0
oklch(97.1% 0.009 52.1)
-
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
#E8B39C
oklch(80.9% 0.07 44.6)
-
Step 400
400
#DA8966
oklch(70.7% 0.111 43.9)
-
Step 500
500
#CE693A
oklch(63.1% 0.142 44.1)
-
Step 600
600
#B94E10
oklch(55.6% 0.153 44.5)
-
Step 700
700 (this color)
#A03F00
oklch(49.4% 0.143 44.5)
-
Step 800
800
#813408
oklch(42.7% 0.118 44.3)
-
Step 900
900
#682E12
oklch(37.6% 0.092 44)
-
Step 950
950
#3D1C0C
oklch(27% 0.058 45.1)
#A03F00 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) | #5C5000 | 0.133 |
| Deuteranopia (no green cones) | #736600 | 0.122 |
| Tritanopia (no blue cones) | #B12535 | 0.073 |
| Achromatopsia (no color) | #5D5D5D | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A03F00
#A03F00
oklch(49.4% 0.143 44.5)
- #006C89
#006C89
oklch(49.4% 0.093 224.7)
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 #A03F00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.012
- Russet #A13905 ΔE 0.013
- Brick #A03623 ΔE 0.032
- Warm Brown #964E02 ΔE 0.036
- Rusty Red #AF2F0D ΔE 0.039
- Saddle Brown #8B4513 ΔE 0.041
- Rust Red #AA2704 ΔE 0.042
- Sienna #A0522D ΔE 0.043
Use #A03F00 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.