#5B591C
Closest named color: Olive Brown (#645403). oklch(45.3% 0.081 107.4), rgb(91, 89, 28).
Aa
White text reads best on this color (7.26:1).
About this color
#5B591C is a medium-dark, moderately saturated brown. In OKLCH its lightness is 45%, its chroma 0.081 and its hue 107°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.020 away. White text reads best on it, at 7.26:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.89:1 |
| White text | 7.26:1 |
Values
| HEX | #5B591C |
| RGB | rgb(91, 89, 28) |
| HSL | hsl(58, 53%, 23%) |
| OKLCH | oklch(45.3% 0.081 107.4) |
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 #5B591C | 7.26:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #5B591C | 2.89:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #5B591C text on white | 7.26:1 | AAA | Lc 85.2 | Fine for body text |
| #5B591C text on black | 2.89:1 | Fails | Lc -16.9 | 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 800.
-
Step 50
50
#F6F6F1
oklch(97.2% 0.007 106.5)
-
Step 100
100
#EAEBE0
oklch(93.6% 0.015 110.9)
-
Step 200
200
#DADBC7
oklch(88.5% 0.027 109.3)
-
Step 300
300
#C3C3A0
oklch(80.8% 0.047 107.4)
-
Step 400
400
#A5A46C
oklch(70.6% 0.076 107.3)
-
Step 500
500
#908E43
oklch(63.2% 0.098 107.5)
-
Step 600
600
#7A7721
oklch(55.5% 0.105 107.4)
-
Step 700
700
#676412
oklch(49.1% 0.098 107.3)
-
Step 800
800 (this color)
#5B591C
oklch(45.3% 0.081 107.4)
-
Step 900
900
#454418
oklch(37.7% 0.063 107.9)
-
Step 950
950
#28280F
oklch(27% 0.041 108.8)
#5B591C 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) | #615514 | 0.014 |
| Deuteranopia (no green cones) | #625820 | 0.013 |
| Tritanopia (no blue cones) | #62534C | 0.073 |
| Achromatopsia (no color) | #575757 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B591C
#5B591C
oklch(45.3% 0.081 107.4)
- #544E81
#544E81
oklch(45.3% 0.082 288)
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 #5B591C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.020
- Army Green #4B5D16 ΔE 0.029
- Greeny Brown #696006 ΔE 0.035
- Camo Green #526525 ΔE 0.036
- Camouflage Green #4B6113 ΔE 0.036
- Green Brown #544E03 ΔE 0.037
- Mud #735C12 ΔE 0.042
- Mud Green #606602 ΔE 0.046
Use #5B591C 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.