#AC580B
Closest named color: Raw Umber (#A75E09). oklch(55.1% 0.134 54.1), rgb(172, 88, 11).
Aa
White text reads best on this color (5.05:1).
About this color
#AC580B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.134 and its hue 54°. Its hue sits on the warm side of the wheel. The nearest named color is Raw Umber (#A75E09), ΔE 0.016 away. White text reads best on it, at 5.05:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.134) |
| Temperature | warm |
| Nearest name | Raw Umber (#A75E09) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #AC580B |
| RGB | rgb(172, 88, 11) |
| HSL | hsl(29, 88%, 36%) |
| OKLCH | oklch(55.1% 0.134 54.1) |
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 #AC580B | 5.05:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #AC580B | 4.15:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #AC580B text on white | 5.05:1 | AA | Lc 74.4 | Content text, not long reading |
| #AC580B text on black | 4.15:1 | AA large text | Lc -27.3 | 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 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
#ECD4C5
oklch(88.6% 0.034 54.1)
-
Step 300
300
#E0B79C
oklch(80.9% 0.06 55.1)
-
Step 400
400
#D09066
oklch(70.7% 0.096 53.8)
-
Step 500
500
#C27339
oklch(63.1% 0.123 54.4)
-
Step 600
600 (this color)
#AC580B
oklch(55.1% 0.134 54.1)
-
Step 700
700
#944900
oklch(49% 0.123 54)
-
Step 800
800
#793C06
oklch(42.7% 0.103 53.9)
-
Step 900
900
#623411
oklch(37.7% 0.081 54)
-
Step 950
950
#391F0C
oklch(27% 0.05 54.8)
#AC580B 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) | #716300 | 0.110 |
| Deuteranopia (no green cones) | #857608 | 0.100 |
| Tritanopia (no blue cones) | #BD454B | 0.085 |
| Achromatopsia (no color) | #6F6F6F | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC580B
#AC580B
oklch(55.1% 0.134 54.1)
- #007CAB
#007CAB
oklch(55.2% 0.116 234)
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 #AC580B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raw Umber #A75E09 ΔE 0.016
- Cinnamon #AC4F06 ΔE 0.020
- Burnt Siena #B75203 ΔE 0.023
- Orangey Brown #B16002 ΔE 0.023
- Umber #B26400 ΔE 0.033
- Copper #B66325 ΔE 0.035
- Sienna #A0522D ΔE 0.038
- Sepia #985E2B ΔE 0.038
Use #AC580B 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.