#508E51
Closest named color: Light Forest Green (#4F9153). oklch(58.9% 0.111 144.3), rgb(80, 142, 81).
Aa
Black text reads best on this color (5.32:1).
About this color
#508E51 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.111 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.008 away. Black text reads best on it, at 5.32:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.32:1 |
| White text | 3.94:1 |
Values
| HEX | #508E51 |
| RGB | rgb(80, 142, 81) |
| HSL | hsl(121, 28%, 44%) |
| OKLCH | oklch(58.9% 0.111 144.3) |
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 #508E51 | 3.94:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #508E51 | 5.32:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #508E51 text on white | 3.94:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #508E51 text on black | 5.32:1 | AA | Lc -35.0 | 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
#E4EDE4
oklch(93.7% 0.015 145.5)
-
Step 200
200
#CEDECE
oklch(88.4% 0.028 145.3)
-
Step 300
300
#AECAAD
oklch(81% 0.05 144.2)
-
Step 400
400
#82AE81
oklch(70.7% 0.08 144.1)
-
Step 500
500
#619A61
oklch(63.2% 0.103 144.2)
-
Step 600
600 (this color)
#508E51
oklch(58.9% 0.111 144.3)
-
Step 700
700
#377039
oklch(49.2% 0.104 144.5)
-
Step 800
800
#2E5B2F
oklch(42.7% 0.087 144.3)
-
Step 900
900
#2A4B2A
oklch(37.8% 0.067 144.1)
-
Step 950
950
#192C19
oklch(27% 0.043 144.3)
#508E51 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) | #90844C | 0.084 |
| Deuteranopia (no green cones) | #877E55 | 0.083 |
| Tritanopia (no blue cones) | #488B7F | 0.069 |
| Achromatopsia (no color) | #808080 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508E51
#508E51
oklch(58.9% 0.111 144.3)
- #9E65A2
#9E65A2
oklch(59% 0.111 324.6)
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 #508E51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.008
- Fern Green #548D44 ΔE 0.014
- Moss Green #658B38 ΔE 0.030
- Sea Green #2E8B57 ΔE 0.030
- Dark Sage #598556 ΔE 0.031
- Viridian #1E9167 ΔE 0.038
- Swamp #698339 ΔE 0.039
- Mossy Green #638B27 ΔE 0.041
Use #508E51 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.