#5B550B
Closest named color: Olive Brown (#645403). oklch(44.2% 0.088 104.4), rgb(91, 85, 11).
Aa
White text reads best on this color (7.63:1).
About this color
#5B550B is a dark, moderately saturated brown. In OKLCH its lightness is 44%, its chroma 0.088 and its hue 104°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.015 away. White text reads best on it, at 7.63:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.088) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.74:1 |
| White text | 7.63:1 |
Values
| HEX | #5B550B |
| RGB | rgb(91, 85, 11) |
| HSL | hsl(55, 78%, 20%) |
| OKLCH | oklch(44.2% 0.088 104.4) |
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 #5B550B | 7.63:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #5B550B | 2.74:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #5B550B text on white | 7.63:1 | AAA | Lc 86.4 | Fine for body text |
| #5B550B text on black | 2.74:1 | Fails | Lc -15.6 | 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 800.
-
Step 50
50
#F6F6F0
oklch(97.1% 0.008 106.5)
-
Step 100
100
#EBEBDF
oklch(93.7% 0.016 106.7)
-
Step 200
200
#DCDAC5
oklch(88.4% 0.028 102.5)
-
Step 300
300
#C5C39D
oklch(80.9% 0.051 105)
-
Step 400
400
#A8A466
oklch(70.8% 0.083 105.1)
-
Step 500
500
#948D38
oklch(63.2% 0.107 104.6)
-
Step 600
600
#7E7609
oklch(55.6% 0.115 104.7)
-
Step 700
700
#6A6300
oklch(49.1% 0.104 104.8)
-
Step 800
800 (this color)
#5B550B
oklch(44.2% 0.088 104.4)
-
Step 900
900
#474311
oklch(37.6% 0.068 104.7)
-
Step 950
950
#2A270C
oklch(26.9% 0.043 103)
#5B550B 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) | #5E5200 | 0.009 |
| Deuteranopia (no green cones) | #605512 | 0.010 |
| Tritanopia (no blue cones) | #634E48 | 0.082 |
| Achromatopsia (no color) | #535353 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B550B
#5B550B
oklch(44.2% 0.088 104.4)
- #4E4B82
#4E4B82
oklch(44.2% 0.089 284.6)
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 #5B550B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.015
- Green Brown #544E03 ΔE 0.025
- Army Green #4B5D16 ΔE 0.031
- Camouflage Green #4B6113 ΔE 0.041
- Greeny Brown #696006 ΔE 0.042
- Mud Brown #60460F ΔE 0.046
- Camo Green #526525 ΔE 0.046
- Mud #735C12 ΔE 0.049
Use #5B550B 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.