#51550D
Closest named color: Green Brown (#544E03). oklch(43.2% 0.09 112.9), rgb(81, 85, 13).
Aa
White text reads best on this color (7.90:1).
About this color
#51550D is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.090 and its hue 113°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Brown (#544E03), ΔE 0.020 away. White text reads best on it, at 7.90:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Green Brown (#544E03) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #51550D |
| RGB | rgb(81, 85, 13) |
| HSL | hsl(63, 73%, 19%) |
| OKLCH | oklch(43.2% 0.09 112.9) |
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 #51550D | 7.90:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #51550D | 2.65:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #51550D text on white | 7.90:1 | AAA | Lc 87.3 | Fine for body text |
| #51550D text on black | 2.65:1 | Fails | Lc -14.8 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#EAEBE0
oklch(93.6% 0.015 110.9)
-
Step 200
200
#D9DCC6
oklch(88.6% 0.03 113.3)
-
Step 300
300
#C0C59E
oklch(80.9% 0.053 113.5)
-
Step 400
400
#A1A668
oklch(70.6% 0.084 112.3)
-
Step 500
500
#8A903D
oklch(63.1% 0.107 112.9)
-
Step 600
600
#747A15
oklch(55.6% 0.117 113.2)
-
Step 700
700
#626603
oklch(49% 0.108 112.4)
-
Step 800
800 (this color)
#51550D
oklch(43.2% 0.09 112.9)
-
Step 900
900
#424514
oklch(37.6% 0.069 112.6)
-
Step 950
950
#27290D
oklch(27.1% 0.045 112.7)
#51550D 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) | #5C5100 | 0.020 |
| Deuteranopia (no green cones) | #5C5214 | 0.022 |
| Tritanopia (no blue cones) | #574F48 | 0.080 |
| Achromatopsia (no color) | #515151 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51550D
#51550D
oklch(43.2% 0.09 112.9)
- #53467D
#53467D
oklch(43.3% 0.09 293.2)
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 #51550D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Brown #544E03 ΔE 0.020
- Army Green #4B5D16 ΔE 0.024
- Olive Brown #645403 ΔE 0.031
- Camouflage Green #4B6113 ΔE 0.036
- Navy Green #35530A ΔE 0.043
- Camo Green #526525 ΔE 0.048
- Mud Brown #60460F ΔE 0.051
- Pine #2B5D34 ΔE 0.053
Use #51550D 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.