#51801E
Closest named color: Olive Green (#677A04). oklch(54.6% 0.136 132.1), rgb(81, 128, 30).
Aa
White text reads best on this color (4.71:1).
About this color
#51801E is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.136 and its hue 132°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Green (#677A04), ΔE 0.029 away. White text reads best on it, at 4.71:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Olive Green (#677A04) |
| Black text | 4.45:1 |
| White text | 4.71:1 |
Values
| HEX | #51801E |
| RGB | rgb(81, 128, 30) |
| HSL | hsl(89, 62%, 31%) |
| OKLCH | oklch(54.6% 0.136 132.1) |
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 #51801E | 4.71:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #51801E | 4.45:1 | AA large text | Lc 31.6 | Non-text elements, placeholder text |
| #51801E text on white | 4.71:1 | AA | Lc 72.5 | Content text, not long reading |
| #51801E text on black | 4.45:1 | AA large text | Lc -29.2 | 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 600.
-
Step 50
50
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E5EDE1
oklch(93.7% 0.018 134.9)
-
Step 200
200
#D1DEC7
oklch(88.4% 0.034 131.4)
-
Step 300
300
#B2C9A1
oklch(80.8% 0.06 132.1)
-
Step 400
400
#8AAE6D
oklch(70.8% 0.098 132)
-
Step 500
500
#6C9944
oklch(63.1% 0.126 132.2)
-
Step 600
600 (this color)
#51801E
oklch(54.6% 0.136 132.1)
-
Step 700
700
#446F13
oklch(49.2% 0.127 132.2)
-
Step 800
800
#385A14
oklch(42.6% 0.105 132.2)
-
Step 900
900
#314A18
oklch(37.6% 0.081 131.7)
-
Step 950
950
#1D2C10
oklch(27.2% 0.052 132.2)
#51801E 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) | #86760A | 0.075 |
| Deuteranopia (no green cones) | #7F7228 | 0.076 |
| Tritanopia (no blue cones) | #527B6D | 0.102 |
| Achromatopsia (no color) | #737373 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51801E
#51801E
oklch(54.6% 0.136 132.1)
- #8B56A9
#8B56A9
oklch(54.7% 0.136 312.1)
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 #51801E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Green #677A04 ΔE 0.029
- Dark Grass Green #388004 ΔE 0.030
- Murky Green #6C7A0E ΔE 0.035
- Sap Green #5C8B15 ΔE 0.038
- Tree Green #2A7E19 ΔE 0.038
- Mossy Green #638B27 ΔE 0.041
- Swamp #698339 ΔE 0.043
- Forest Green #228B22 ΔE 0.045
Use #51801E 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.