#3F8F71
Closest named color: Viridian (#1E9167). oklch(59.1% 0.092 166), rgb(63, 143, 113).
Aa
Black text reads best on this color (5.37:1).
About this color
#3F8F71 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.092 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.027 away. Black text reads best on it, at 5.37:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #3F8F71 |
| RGB | rgb(63, 143, 113) |
| HSL | hsl(158, 39%, 40%) |
| OKLCH | oklch(59.1% 0.092 166) |
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 #3F8F71 | 3.90:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #3F8F71 | 5.37:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #3F8F71 text on white | 3.90:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #3F8F71 text on black | 5.37:1 | AA | Lc -35.4 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3ECE8
oklch(93.5% 0.011 167.8)
-
Step 200
200
#CCDED6
oklch(88.5% 0.022 167.4)
-
Step 300
300
#A8CABA
oklch(81% 0.043 165.2)
-
Step 400
400
#78AE97
oklch(70.6% 0.066 166.1)
-
Step 500
500
#539A7E
oklch(63.1% 0.084 166.2)
-
Step 600
600 (this color)
#3F8F71
oklch(59.1% 0.092 166)
-
Step 700
700
#257055
oklch(49.1% 0.086 165.6)
-
Step 800
800
#215B46
oklch(42.7% 0.07 166.1)
-
Step 900
900
#214B3B
oklch(37.7% 0.055 166.2)
-
Step 950
950
#142C22
oklch(27% 0.036 165)
#3F8F71 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) | #8C866F | 0.091 |
| Deuteranopia (no green cones) | #807D73 | 0.089 |
| Tritanopia (no blue cones) | #1C8F86 | 0.034 |
| Achromatopsia (no color) | #818181 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F8F71
#3F8F71
oklch(59.1% 0.092 166)
- #A56789
#A56789
oklch(59.2% 0.091 346.2)
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 #3F8F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.027
- Ocean Green #3D9973 ΔE 0.030
- Dusty Teal #4C9085 ΔE 0.034
- Slate Green #658D6D ΔE 0.036
- Sea Green #2E8B57 ΔE 0.041
- Dark Sage #598556 ΔE 0.041
- Light Forest Green #4F9153 ΔE 0.044
- Blue Green #0F9B8E ΔE 0.046
Use #3F8F71 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.