#518639
Closest named color: Fern Green (#548D44). oklch(56.5% 0.123 137), rgb(81, 134, 57).
Aa
Black text reads best on this color (4.81:1).
About this color
#518639 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.123 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.022 away. Black text reads best on it, at 4.81:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 4.81:1 |
| White text | 4.35:1 |
Values
| HEX | #518639 |
| RGB | rgb(81, 134, 57) |
| HSL | hsl(101, 40%, 37%) |
| OKLCH | oklch(56.5% 0.123 137) |
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 #518639 | 4.35:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #518639 | 4.81:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #518639 text on white | 4.35:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #518639 text on black | 4.81:1 | AA | Lc -31.6 | Non-text elements, placeholder text |
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
#D0DECA
oklch(88.5% 0.031 136.2)
-
Step 300
300
#B0C9A7
oklch(80.8% 0.054 137.4)
-
Step 400
400
#86AE77
oklch(70.7% 0.089 137.4)
-
Step 500
500
#689953
oklch(63.1% 0.112 136.9)
-
Step 600
600 (this color)
#518639
oklch(56.5% 0.123 137)
-
Step 700
700
#3F6F29
oklch(49.1% 0.114 137.1)
-
Step 800
800
#345B23
oklch(42.8% 0.096 137.2)
-
Step 900
900
#2E4A22
oklch(37.6% 0.072 137)
-
Step 950
950
#1B2C14
oklch(27.1% 0.048 137.1)
#518639 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) | #8A7C31 | 0.078 |
| Deuteranopia (no green cones) | #83773E | 0.080 |
| Tritanopia (no blue cones) | #4F8275 | 0.086 |
| Achromatopsia (no color) | #797979 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518639
#518639
oklch(56.5% 0.123 137)
- #935DA5
#935DA5
oklch(56.5% 0.123 317.3)
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 #518639, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.022
- Moss Green #658B38 ΔE 0.029
- Swamp #698339 ΔE 0.029
- Mossy Green #638B27 ΔE 0.031
- Sap Green #5C8B15 ΔE 0.035
- Light Forest Green #4F9153 ΔE 0.037
- Sea Green #2E8B57 ΔE 0.038
- Dark Sage #598556 ΔE 0.039
Use #518639 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.