#AC5903
Closest named color: Raw Umber (#A75E09). oklch(55.3% 0.135 55.7), rgb(172, 89, 3).
Aa
White text reads best on this color (5.01:1).
About this color
#AC5903 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.135 and its hue 56°. Its hue sits on the warm side of the wheel. The nearest named color is Raw Umber (#A75E09), ΔE 0.014 away. White text reads best on it, at 5.01:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.135) |
| Temperature | warm |
| Nearest name | Raw Umber (#A75E09) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #AC5903 |
| RGB | rgb(172, 89, 3) |
| HSL | hsl(31, 97%, 34%) |
| OKLCH | oklch(55.3% 0.135 55.7) |
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 #AC5903 | 5.01:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #AC5903 | 4.18:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #AC5903 text on white | 5.01:1 | AA | Lc 74.2 | Content text, not long reading |
| #AC5903 text on black | 4.18:1 | AA large text | Lc -27.6 | 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
#F4E7DF
oklch(93.6% 0.018 54)
-
Step 200
200
#EBD4C4
oklch(88.5% 0.034 57.1)
-
Step 300
300
#E0B79B
oklch(80.9% 0.061 56)
-
Step 400
400
#CF9064
oklch(70.6% 0.097 55.4)
-
Step 500
500
#C27336
oklch(63.1% 0.125 55.5)
-
Step 600
600 (this color)
#AC5903
oklch(55.3% 0.135 55.7)
-
Step 700
700
#934B00
oklch(49.2% 0.121 55.9)
-
Step 800
800
#793D02
oklch(42.8% 0.104 55.7)
-
Step 900
900
#61340F
oklch(37.6% 0.081 55.6)
-
Step 950
950
#391F0B
oklch(27% 0.051 55.8)
#AC5903 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) | #726300 | 0.107 |
| Deuteranopia (no green cones) | #867601 | 0.097 |
| Tritanopia (no blue cones) | #BD464B | 0.088 |
| Achromatopsia (no color) | #6F6F6F | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC5903
#AC5903
oklch(55.3% 0.135 55.7)
- #007CAE
#007CAE
oklch(55.4% 0.119 235.6)
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 #AC5903, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raw Umber #A75E09 ΔE 0.014
- Orangey Brown #B16002 ΔE 0.020
- Cinnamon #AC4F06 ΔE 0.023
- Burnt Siena #B75203 ΔE 0.024
- Umber #B26400 ΔE 0.030
- Copper #B66325 ΔE 0.034
- Raw Sienna #9A6200 ΔE 0.038
- Sepia #985E2B ΔE 0.039
Use #AC5903 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.