#39B371
Closest named color: Medium Sea Green (#3CB371). oklch(68.3% 0.145 155.3), rgb(57, 179, 113).
Aa
Black text reads best on this color (7.86:1).
About this color
#39B371 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.145 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Sea Green (#3CB371), ΔE 0.002 away. Black text reads best on it, at 7.86:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Medium Sea Green (#3CB371) |
| Black text | 7.86:1 |
| White text | 2.67:1 |
Values
| HEX | #39B371 |
| RGB | rgb(57, 179, 113) |
| HSL | hsl(148, 52%, 46%) |
| OKLCH | oklch(68.3% 0.145 155.3) |
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 #39B371 | 2.67:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #39B371 | 7.86:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #39B371 text on white | 2.67:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #39B371 text on black | 7.86:1 | AAA | Lc -50.3 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DDEFE2
oklch(93.5% 0.026 154.5)
-
Step 200
200
#C0E4CB
oklch(88.6% 0.051 154.9)
-
Step 300
300
#90D2A7
oklch(80.8% 0.091 155.3)
-
Step 400
400 (this color)
#39B371
oklch(68.3% 0.145 155.3)
-
Step 500
500
#00A45F
oklch(63.2% 0.155 155.5)
-
Step 600
600
#008A4F
oklch(55.7% 0.136 155.4)
-
Step 700
700
#007441
oklch(49.1% 0.121 155.2)
-
Step 800
800
#005F35
oklch(42.7% 0.104 155.6)
-
Step 900
900
#004F2B
oklch(37.6% 0.092 155.5)
-
Step 950
950
#003018
oklch(27.2% 0.067 155.5)
#39B371 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) | #B2A56D | 0.129 |
| Deuteranopia (no green cones) | #A39A75 | 0.127 |
| Tritanopia (no blue cones) | #00B1A2 | 0.071 |
| Achromatopsia (no color) | #9E9E9E | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39B371
#39B371
oklch(68.3% 0.145 155.3)
- #CF74BC
#CF74BC
oklch(68.3% 0.145 335.3)
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 #39B371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Sea Green #3CB371 ΔE 0.002
- Dark Seafoam #1FB57A ΔE 0.013
- Green Teal #0CB577 ΔE 0.014
- Bluey Green #2BB179 ΔE 0.015
- Dark Seafoam Green #3EAF76 ΔE 0.015
- Jade Green #2BAF6A ΔE 0.016
- Seaweed Green #35AD6B ΔE 0.018
- Algae #54AC68 ΔE 0.023
Use #39B371 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.