#5B511B
Closest named color: Green Brown (#544E03). oklch(43.3% 0.074 98.7), rgb(91, 81, 27).
Aa
White text reads best on this color (7.96:1).
About this color
#5B511B is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.074 and its hue 99°. Its hue sits on the warm side of the wheel. The nearest named color is Green Brown (#544E03), ΔE 0.022 away. White text reads best on it, at 7.96:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.074) |
| Temperature | warm |
| Nearest name | Green Brown (#544E03) |
| Black text | 2.63:1 |
| White text | 7.96:1 |
Values
| HEX | #5B511B |
| RGB | rgb(91, 81, 27) |
| HSL | hsl(51, 54%, 23%) |
| OKLCH | oklch(43.3% 0.074 98.7) |
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 #5B511B | 7.96:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #5B511B | 2.63:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #5B511B text on white | 7.96:1 | AAA | Lc 87.5 | Fine for body text |
| #5B511B text on black | 2.63:1 | Fails | Lc -14.6 | Not readable |
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
#F6F5F1
oklch(97% 0.005 95.1)
-
Step 100
100
#ECEAE1
oklch(93.6% 0.012 96.4)
-
Step 200
200
#DDDAC8
oklch(88.6% 0.024 99.1)
-
Step 300
300
#C7C2A2
oklch(81% 0.044 100)
-
Step 400
400
#ABA26F
oklch(70.7% 0.07 99.4)
-
Step 500
500
#978A48
oklch(63% 0.088 98.4)
-
Step 600
600
#827429
oklch(55.7% 0.096 98.6)
-
Step 700
700
#6E611B
oklch(49.1% 0.089 98.4)
-
Step 800
800 (this color)
#5B511B
oklch(43.3% 0.074 98.7)
-
Step 900
900
#49421B
oklch(37.7% 0.058 99.3)
-
Step 950
950
#2B2711
oklch(27.1% 0.037 99.2)
#5B511B 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) | #594F14 | 0.009 |
| Deuteranopia (no green cones) | #5C521E | 0.004 |
| Tritanopia (no blue cones) | #624B46 | 0.068 |
| Achromatopsia (no color) | #515151 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B511B
#5B511B
oklch(43.3% 0.074 98.7)
- #484C79
#484C79
oklch(43.4% 0.074 278.9)
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 #5B511B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Brown #544E03 ΔE 0.022
- Olive Brown #645403 ΔE 0.023
- Mud Brown #60460F ΔE 0.031
- Army Green #4B5D16 ΔE 0.045
- Camouflage Green #4B6113 ΔE 0.056
- Greeny Brown #696006 ΔE 0.056
- Mud #735C12 ΔE 0.056
- Camo Green #526525 ΔE 0.059
Use #5B511B 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.