#A33900
Closest named color: Russet (#A13905). oklch(49.1% 0.151 41.1), rgb(163, 57, 0).
Aa
White text reads best on this color (6.68:1).
About this color
#A33900 is a medium-dark, vivid orange. In OKLCH its lightness is 49%, its chroma 0.151 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Russet (#A13905), ΔE 0.004 away. White text reads best on it, at 6.68:1.
| Hue family | Oranges |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Russet (#A13905) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #A33900 |
| RGB | rgb(163, 57, 0) |
| HSL | hsl(21, 100%, 32%) |
| OKLCH | oklch(49.1% 0.151 41.1) |
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 #A33900 | 6.68:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #A33900 | 3.14:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #A33900 text on white | 6.68:1 | AA | Lc 82.0 | Fine for body text |
| #A33900 text on black | 3.14:1 | AA large text | Lc -19.9 | 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 700.
-
Step 50
50
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F7E6DF
oklch(93.7% 0.021 43.9)
-
Step 200
200
#F2D1C5
oklch(88.5% 0.041 41)
-
Step 300
300
#EAB29D
oklch(81% 0.072 41.5)
-
Step 400
400
#DE8766
oklch(70.8% 0.117 41.4)
-
Step 500
500
#D2653A
oklch(63.1% 0.149 41.2)
-
Step 600
600
#BE4912
oklch(55.7% 0.162 41.1)
-
Step 700
700 (this color)
#A33900
oklch(49.1% 0.151 41.1)
-
Step 800
800
#843009
oklch(42.6% 0.124 40.9)
-
Step 900
900
#6B2C12
oklch(37.8% 0.098 41.2)
-
Step 950
950
#3F1A0C
oklch(26.9% 0.063 40.6)
#A33900 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) | #594D00 | 0.146 |
| Deuteranopia (no green cones) | #726500 | 0.133 |
| Tritanopia (no blue cones) | #B41830 | 0.069 |
| Achromatopsia (no color) | #5C5C5C | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A33900
#A33900
oklch(49.1% 0.151 41.1)
- #006C84
#006C84
oklch(49.2% 0.09 220.2)
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 #A33900, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Russet #A13905 ΔE 0.004
- Burnt Umber #A0450E ΔE 0.023
- Brick #A03623 ΔE 0.024
- Rusty Red #AF2F0D ΔE 0.028
- Rust Red #AA2704 ΔE 0.030
- Burnt Red #9F2305 ΔE 0.040
- Rufous #AE2012 ΔE 0.042
- Brown #A52A2A ΔE 0.044
Use #A33900 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.