#37E289
Closest named color: Aqua Green (#12E193). oklch(80.8% 0.185 154.8), rgb(55, 226, 137).
Aa
Black text reads best on this color (12.40:1).
About this color
#37E289 is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.185 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.015 away. Black text reads best on it, at 12.40:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.185) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 12.40:1 |
| White text | 1.69:1 |
Values
| HEX | #37E289 |
| RGB | rgb(55, 226, 137) |
| HSL | hsl(149, 75%, 55%) |
| OKLCH | oklch(80.8% 0.185 154.8) |
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 #37E289 | 1.69:1 | Fails | Lc -33.4 | Non-text elements, placeholder text |
| Black text on #37E289 | 12.40:1 | AAA | Lc 74.2 | Content text, not long reading |
| #37E289 text on white | 1.69:1 | Fails | Lc 29.6 | Dividers and decoration only |
| #37E289 text on black | 12.40:1 | AAA | Lc -73.2 | Content text, not long reading |
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 300.
-
Step 50
50
#E9FBEE
oklch(97.1% 0.026 154.5)
-
Step 100
100
#CFF5DA
oklch(93.6% 0.054 154.3)
-
Step 200
200
#A1EEBB
oklch(88.5% 0.104 154.7)
-
Step 300
300 (this color)
#37E289
oklch(80.8% 0.185 154.8)
-
Step 400
400
#00BF6D
oklch(70.7% 0.176 154.8)
-
Step 500
500
#00A45D
oklch(63.1% 0.157 154.8)
-
Step 600
600
#008A4D
oklch(55.6% 0.138 154.7)
-
Step 700
700
#007440
oklch(49.1% 0.122 154.8)
-
Step 800
800
#005F34
oklch(42.6% 0.105 155.1)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#37E289 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) | #E1CF83 | 0.164 |
| Deuteranopia (no green cones) | #CDC18F | 0.161 |
| Tritanopia (no blue cones) | #00E0CC | 0.091 |
| Achromatopsia (no color) | #C7C7C7 | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37E289
#37E289
oklch(80.8% 0.185 154.8)
- #FF95EA
#FF95EA
oklch(80.7% 0.163 334.7)
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 #37E289, closest first.
No curated palette has a color within ΔE 0.04 of #37E289.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.015
- Weird Green #3AE57F ΔE 0.017
- Turquoise Green #04F489 ΔE 0.050
- Seaweed #18D17B ΔE 0.050
- Emerald #06D6A0 ΔE 0.053
- Fresh Green #69D84F ΔE 0.056
- Aqua Marine #2EE8BB ΔE 0.062
- Medium Spring Green #00FA9A ΔE 0.063
Use #37E289 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.