#51583B
Closest named color: Army Green (#4B5D16). oklch(44.6% 0.046 119.3), rgb(81, 88, 59).
Aa
White text reads best on this color (7.47:1).
About this color
#51583B is a dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.046 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Army Green (#4B5D16), ΔE 0.051 away. White text reads best on it, at 7.47:1.
| Hue family | Browns |
| Lightness | dark (45%) |
| Chroma | muted (0.046) |
| Temperature | in between |
| Nearest name | Army Green (#4B5D16) |
| Black text | 2.80:1 |
| White text | 7.47:1 |
Values
| HEX | #51583B |
| RGB | rgb(81, 88, 59) |
| HSL | hsl(74, 20%, 29%) |
| OKLCH | oklch(44.6% 0.046 119.3) |
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 #51583B | 7.47:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #51583B | 2.80:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #51583B text on white | 7.47:1 | AAA | Lc 86.0 | Fine for body text |
| #51583B text on black | 2.80:1 | Fails | Lc -16.1 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE5
oklch(93.7% 0.008 121.6)
-
Step 200
200
#D8DBD0
oklch(88.6% 0.015 119.1)
-
Step 300
300
#BEC3B0
oklch(80.8% 0.027 119)
-
Step 400
400
#9DA587
oklch(70.7% 0.043 119.6)
-
Step 500
500
#858F69
oklch(63.2% 0.056 120)
-
Step 600
600
#6F7951
oklch(55.7% 0.06 119.8)
-
Step 700
700
#5D6541
oklch(49% 0.055 118.7)
-
Step 800
800 (this color)
#51583B
oklch(44.6% 0.046 119.3)
-
Step 900
900
#3F442F
oklch(37.6% 0.035 119)
-
Step 950
950
#25281C
oklch(27% 0.022 119.3)
#51583B 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) | #5C5539 | 0.019 |
| Deuteranopia (no green cones) | #5B553C | 0.018 |
| Tritanopia (no blue cones) | #545550 | 0.038 |
| Achromatopsia (no color) | #555555 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51583B
#51583B
oklch(44.6% 0.046 119.3)
- #584F6A
#584F6A
oklch(44.7% 0.045 299.9)
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 #51583B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Army Green #4B5D16 ΔE 0.051
- Olive Brown #645403 ΔE 0.052
- Pine #2B5D34 ΔE 0.053
- Green Brown #544E03 ΔE 0.053
- Camo Green #526525 ΔE 0.056
- Mud Brown #60460F ΔE 0.060
- Camouflage Green #4B6113 ΔE 0.060
- Dark Green Blue #1F6357 ΔE 0.062
Use #51583B 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.