#518A4E
Closest named color: Fern Green (#548D44). oklch(57.9% 0.108 143), rgb(81, 138, 78).
Aa
Black text reads best on this color (5.09:1).
About this color
#518A4E is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.108 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.017 away. Black text reads best on it, at 5.09:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.09:1 |
| White text | 4.12:1 |
Values
| HEX | #518A4E |
| RGB | rgb(81, 138, 78) |
| HSL | hsl(117, 28%, 42%) |
| OKLCH | oklch(57.9% 0.108 143) |
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 #518A4E | 4.12:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #518A4E | 5.09:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #518A4E text on white | 4.12:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #518A4E text on black | 5.09:1 | AA | Lc -33.5 | 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
#F3F7F3
oklch(97.2% 0.007 145.5)
-
Step 100
100
#E5ECE4
oklch(93.6% 0.013 141.8)
-
Step 200
200
#CFDECE
oklch(88.5% 0.027 143.6)
-
Step 300
300
#AFC9AD
oklch(80.9% 0.048 143.2)
-
Step 400
400
#84AD81
oklch(70.6% 0.077 143)
-
Step 500
500
#649961
oklch(63.1% 0.1 143.1)
-
Step 600
600 (this color)
#518A4E
oklch(57.9% 0.108 143)
-
Step 700
700
#3B6F39
oklch(49.1% 0.1 143.1)
-
Step 800
800
#315A2F
oklch(42.6% 0.083 143)
-
Step 900
900
#2C4A2A
oklch(37.6% 0.064 142.8)
-
Step 950
950
#1A2C19
oklch(27.1% 0.042 143.1)
#518A4E 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) | #8D804A | 0.081 |
| Deuteranopia (no green cones) | #847B52 | 0.079 |
| Tritanopia (no blue cones) | #4B877B | 0.067 |
| Achromatopsia (no color) | #7D7D7D | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518A4E
#518A4E
oklch(57.9% 0.108 143)
- #98639F
#98639F
oklch(57.8% 0.108 322.7)
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 #518A4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.017
- Light Forest Green #4F9153 ΔE 0.020
- Dark Sage #598556 ΔE 0.023
- Sea Green #2E8B57 ΔE 0.028
- Moss Green #658B38 ΔE 0.031
- Swamp #698339 ΔE 0.033
- Khaki Green #728639 ΔE 0.040
- Viridian #1E9167 ΔE 0.041
Use #518A4E 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.