#51813D
Closest named color: Military Green (#667C3E). oklch(55.2% 0.111 137.3), rgb(81, 129, 61).
Aa
White text reads best on this color (4.60:1).
About this color
#51813D is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.111 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Military Green (#667C3E), ΔE 0.029 away. White text reads best on it, at 4.60:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Military Green (#667C3E) |
| Black text | 4.55:1 |
| White text | 4.60:1 |
Values
| HEX | #51813D |
| RGB | rgb(81, 129, 61) |
| HSL | hsl(102, 36%, 37%) |
| OKLCH | oklch(55.2% 0.111 137.3) |
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 #51813D | 4.60:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #51813D | 4.55:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #51813D text on white | 4.60:1 | AA | Lc 71.9 | Content text, not long reading |
| #51813D text on black | 4.55:1 | AA | Lc -29.8 | 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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E5ECE3
oklch(93.5% 0.014 138.7)
-
Step 200
200
#D1DECC
oklch(88.6% 0.028 136.9)
-
Step 300
300
#B2C9A9
oklch(81% 0.051 136.9)
-
Step 400
400
#89AD7B
oklch(70.8% 0.081 137.1)
-
Step 500
500
#6B9859
oklch(63.1% 0.103 137.2)
-
Step 600
600 (this color)
#51813D
oklch(55.2% 0.111 137.3)
-
Step 700
700
#426E30
oklch(49.1% 0.104 137.4)
-
Step 800
800
#375A29
oklch(42.8% 0.086 137.5)
-
Step 900
900
#304A25
oklch(37.8% 0.068 137)
-
Step 950
950
#1C2B16
oklch(26.9% 0.042 137.2)
#51813D 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) | #857837 | 0.073 |
| Deuteranopia (no green cones) | #7E7341 | 0.073 |
| Tritanopia (no blue cones) | #4F7D71 | 0.077 |
| Achromatopsia (no color) | #757575 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51813D
#51813D
oklch(55.2% 0.111 137.3)
- #8C5C9D
#8C5C9D
oklch(55.2% 0.111 316.9)
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 #51813D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Military Green #667C3E ΔE 0.029
- Swamp #698339 ΔE 0.031
- Dark Sage #598556 ΔE 0.034
- Fern Green #548D44 ΔE 0.036
- Sea Green #2E8B57 ΔE 0.040
- Olive Green #677A04 ΔE 0.040
- Muddy Green #657432 ΔE 0.041
- Moss Green #658B38 ΔE 0.041
Use #51813D 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.