#51812F
Closest named color: Olive Green (#677A04). oklch(55% 0.125 134.4), rgb(81, 129, 47).
Aa
White text reads best on this color (4.63:1).
About this color
#51812F is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.125 and its hue 134°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Green (#677A04), ΔE 0.032 away. White text reads best on it, at 4.63:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Olive Green (#677A04) |
| Black text | 4.53:1 |
| White text | 4.63:1 |
Values
| HEX | #51812F |
| RGB | rgb(81, 129, 47) |
| HSL | hsl(95, 47%, 35%) |
| OKLCH | oklch(55% 0.125 134.4) |
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 #51812F | 4.63:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #51812F | 4.53:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #51812F text on white | 4.63:1 | AA | Lc 72.0 | Content text, not long reading |
| #51812F text on black | 4.53:1 | AA | Lc -29.6 | 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 600.
-
Step 50
50
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E5ECE2
oklch(93.5% 0.015 136.1)
-
Step 200
200
#D1DECA
oklch(88.5% 0.03 134.4)
-
Step 300
300
#B2C9A5
oklch(80.9% 0.055 134.2)
-
Step 400
400
#89AD74
oklch(70.6% 0.089 134.4)
-
Step 500
500
#6B994F
oklch(63.2% 0.115 134.7)
-
Step 600
600 (this color)
#51812F
oklch(55% 0.125 134.4)
-
Step 700
700
#436E23
oklch(49% 0.115 134.3)
-
Step 800
800
#375A1F
oklch(42.7% 0.096 134.6)
-
Step 900
900
#304A1F
oklch(37.7% 0.075 134.4)
-
Step 950
950
#1C2B13
oklch(26.8% 0.047 134.7)
#51812F 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) | #867726 | 0.075 |
| Deuteranopia (no green cones) | #7F7335 | 0.075 |
| Tritanopia (no blue cones) | #517C70 | 0.092 |
| Achromatopsia (no color) | #757575 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51812F
#51812F
oklch(55% 0.125 134.4)
- #8C59A4
#8C59A4
oklch(55% 0.125 314.2)
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 #51812F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Green #677A04 ΔE 0.032
- Swamp #698339 ΔE 0.034
- Murky Green #6C7A0E ΔE 0.036
- Fern Green #548D44 ΔE 0.038
- Military Green #667C3E ΔE 0.038
- Mossy Green #638B27 ΔE 0.040
- Dark Grass Green #388004 ΔE 0.040
- Sap Green #5C8B15 ΔE 0.040
Use #51812F 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.