#37AE59
Closest named color: Medium Green (#39AD48). oklch(66.5% 0.162 149.1), rgb(55, 174, 89).
Aa
Black text reads best on this color (7.36:1).
About this color
#37AE59 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.162 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.018 away. Black text reads best on it, at 7.36:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.36:1 |
| White text | 2.85:1 |
Values
| HEX | #37AE59 |
| RGB | rgb(55, 174, 89) |
| HSL | hsl(137, 52%, 45%) |
| OKLCH | oklch(66.5% 0.162 149.1) |
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 #37AE59 | 2.85:1 | Fails | Lc -59.5 | Large or bold text, headings |
| Black text on #37AE59 | 7.36:1 | AAA | Lc 49.8 | Large or bold text, headings |
| #37AE59 text on white | 2.85:1 | Fails | Lc 54.2 | Large or bold text, headings |
| #37AE59 text on black | 7.36:1 | AAA | Lc -47.6 | 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 500.
-
Step 50
50
#F1F8F2
oklch(97.2% 0.011 149.9)
-
Step 100
100
#E0EEE2
oklch(93.5% 0.022 149.7)
-
Step 200
200
#C6E2CA
oklch(88.6% 0.044 149.4)
-
Step 300
300
#9DCFA5
oklch(80.8% 0.079 149.2)
-
Step 400
400
#63B674
oklch(70.7% 0.126 149)
-
Step 500
500 (this color)
#37AE59
oklch(66.5% 0.162 149.1)
-
Step 600
600
#008B3B
oklch(55.6% 0.156 149.2)
-
Step 700
700
#007530
oklch(49.1% 0.138 149)
-
Step 800
800
#006026
oklch(42.7% 0.12 149)
-
Step 900
900
#01501F
oklch(37.7% 0.105 149.1)
-
Step 950
950
#072F13
oklch(27% 0.067 149.3)
#37AE59 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) | #AF9F52 | 0.131 |
| Deuteranopia (no green cones) | #A1955F | 0.130 |
| Tritanopia (no blue cones) | #00AB9A | 0.091 |
| Achromatopsia (no color) | #999999 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37AE59
#37AE59
oklch(66.5% 0.162 149.1)
- #C86BC4
#C86BC4
oklch(66.5% 0.162 328.8)
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 #37AE59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.018
- Jade Green #2BAF6A ΔE 0.019
- Dark Pastel Green #56AE57 ΔE 0.021
- Seaweed Green #35AD6B ΔE 0.023
- Mid Green #50A747 ΔE 0.024
- Cool Green #33B864 ΔE 0.028
- Shamrock #01B44C ΔE 0.030
- Medium Sea Green #3CB371 ΔE 0.030
Use #37AE59 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.