#AC591F
Closest named color: Raw Umber (#A75E09). oklch(55.4% 0.128 51.1), rgb(172, 89, 31).
Aa
White text reads best on this color (4.99:1).
About this color
#AC591F is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.128 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Raw Umber (#A75E09), ΔE 0.021 away. White text reads best on it, at 4.99:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.128) |
| Temperature | warm |
| Nearest name | Raw Umber (#A75E09) |
| Black text | 4.20:1 |
| White text | 4.99:1 |
Values
| HEX | #AC591F |
| RGB | rgb(172, 89, 31) |
| HSL | hsl(25, 69%, 40%) |
| OKLCH | oklch(55.4% 0.128 51.1) |
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 #AC591F | 4.99:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #AC591F | 4.20:1 | AA large text | Lc 30.0 | Dividers and decoration only |
| #AC591F text on white | 4.99:1 | AA | Lc 74.1 | Content text, not long reading |
| #AC591F text on black | 4.20:1 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E7E0
oklch(93.6% 0.017 50.4)
-
Step 200
200
#EBD4C7
oklch(88.5% 0.031 51.5)
-
Step 300
300
#E0B79F
oklch(81% 0.058 52)
-
Step 400
400
#CF906B
oklch(70.7% 0.092 51.2)
-
Step 500
500
#C17342
oklch(63.1% 0.118 51.3)
-
Step 600
600 (this color)
#AC591F
oklch(55.4% 0.128 51.1)
-
Step 700
700
#944911
oklch(49.1% 0.119 51.1)
-
Step 800
800
#783C13
oklch(42.6% 0.098 50.6)
-
Step 900
900
#613417
oklch(37.6% 0.077 51.1)
-
Step 950
950
#391F0F
oklch(27% 0.048 51.1)
#AC591F 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) | #716416 | 0.110 |
| Deuteranopia (no green cones) | #85771E | 0.100 |
| Tritanopia (no blue cones) | #BD474D | 0.078 |
| Achromatopsia (no color) | #6F6F6F | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC591F
#AC591F
oklch(55.4% 0.128 51.1)
- #007DA8
#007DA8
oklch(55.3% 0.112 231.4)
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 #AC591F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raw Umber #A75E09 ΔE 0.021
- Cinnamon #AC4F06 ΔE 0.022
- Burnt Siena #B75203 ΔE 0.023
- Orangey Brown #B16002 ΔE 0.026
- Copper #B66325 ΔE 0.032
- Sienna #A0522D ΔE 0.034
- Earth #A2653E ΔE 0.034
- Umber #B26400 ΔE 0.035
Use #AC591F 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.