#2CD18B
Closest named color: Seaweed (#18D17B). oklch(76.3% 0.165 159.1), rgb(44, 209, 139).
Aa
Black text reads best on this color (10.60:1).
About this color
#2CD18B is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.165 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.022 away. Black text reads best on it, at 10.60:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.60:1 |
| White text | 1.98:1 |
Values
| HEX | #2CD18B |
| RGB | rgb(44, 209, 139) |
| HSL | hsl(155, 65%, 50%) |
| OKLCH | oklch(76.3% 0.165 159.1) |
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 #2CD18B | 1.98:1 | Fails | Lc -42.1 | Non-text elements, placeholder text |
| Black text on #2CD18B | 10.60:1 | AAA | Lc 66.2 | Content text, not long reading |
| #2CD18B text on white | 1.98:1 | Fails | Lc 37.7 | Non-text elements, placeholder text |
| #2CD18B text on black | 10.60:1 | AAA | Lc -64.7 | 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
#EAFAF0
oklch(97.1% 0.021 158.6)
-
Step 100
100
#D0F4DE
oklch(93.5% 0.048 158.5)
-
Step 200
200
#A4ECC3
oklch(88.4% 0.092 158.9)
-
Step 300
300 (this color)
#2CD18B
oklch(76.3% 0.165 159.1)
-
Step 400
400
#00BE7B
oklch(70.7% 0.162 159.2)
-
Step 500
500
#00A368
oklch(63.1% 0.145 158.9)
-
Step 600
600
#008957
oklch(55.5% 0.128 159.1)
-
Step 700
700
#007349
oklch(49% 0.112 159.4)
-
Step 800
800
#005F3B
oklch(42.8% 0.098 159.1)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#2CD18B 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) | #CFC087 | 0.154 |
| Deuteranopia (no green cones) | #BBB390 | 0.149 |
| Tritanopia (no blue cones) | #00D0BF | 0.072 |
| Achromatopsia (no color) | #B8B8B8 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2CD18B
#2CD18B
oklch(76.3% 0.165 159.1)
- #F585D4
#F585D4
oklch(76.4% 0.165 339.4)
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 #2CD18B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.022
- Emerald #06D6A0 ΔE 0.026
- Greenblue #23C48B ΔE 0.039
- Aqua Green #12E193 ΔE 0.043
- Algae Green #21C36F ΔE 0.047
- Dark Mint #48C072 ΔE 0.048
- Soft Green #6FC276 ΔE 0.050
- Dark Mint Green #20C073 ΔE 0.052
Use #2CD18B 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.