#3F8B59
Closest named color: Sea Green (#2E8B57). oklch(57.5% 0.108 152.7), rgb(63, 139, 89).
Aa
Black text reads best on this color (5.04:1).
About this color
#3F8B59 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.108 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.013 away. Black text reads best on it, at 5.04:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.04:1 |
| White text | 4.15:1 |
Values
| HEX | #3F8B59 |
| RGB | rgb(63, 139, 89) |
| HSL | hsl(141, 38%, 40%) |
| OKLCH | oklch(57.5% 0.108 152.7) |
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 #3F8B59 | 4.15:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #3F8B59 | 5.04:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #3F8B59 text on white | 4.15:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #3F8B59 text on black | 5.04:1 | AA | Lc -33.2 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE5
oklch(93.6% 0.015 151.8)
-
Step 200
200
#CCDFD1
oklch(88.6% 0.028 153.8)
-
Step 300
300
#AACAB2
oklch(80.9% 0.048 152.8)
-
Step 400
400
#7BAF89
oklch(70.7% 0.078 152.5)
-
Step 500
500
#579B6C
oklch(63.1% 0.1 152.6)
-
Step 600
600 (this color)
#3F8B59
oklch(57.5% 0.108 152.7)
-
Step 700
700
#2A7144
oklch(49.1% 0.101 152.7)
-
Step 800
800
#255C38
oklch(42.7% 0.084 152.5)
-
Step 900
900
#244B31
oklch(37.6% 0.063 153.1)
-
Step 950
950
#162C1D
oklch(27% 0.04 153.2)
#3F8B59 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) | #8B8156 | 0.094 |
| Deuteranopia (no green cones) | #80795C | 0.092 |
| Tritanopia (no blue cones) | #2C897E | 0.056 |
| Achromatopsia (no color) | #7C7C7C | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F8B59
#3F8B59
oklch(57.5% 0.108 152.7)
- #9E5F94
#9E5F94
oklch(57.4% 0.108 332.9)
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 #3F8B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.013
- Viridian #1E9167 ΔE 0.024
- Light Forest Green #4F9153 ΔE 0.027
- Dark Sage #598556 ΔE 0.028
- Fern Green #548D44 ΔE 0.032
- Ocean Green #3D9973 ΔE 0.047
- Moss Green #658B38 ΔE 0.049
- Swamp #698339 ΔE 0.050
Use #3F8B59 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.