#18E39B
Closest named color: Aqua Green (#12E193). oklch(81% 0.177 161.1), rgb(24, 227, 155).
Aa
Black text reads best on this color (12.49:1).
About this color
#18E39B is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.177 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.011 away. Black text reads best on it, at 12.49:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 12.49:1 |
| White text | 1.68:1 |
Values
| HEX | #18E39B |
| RGB | rgb(24, 227, 155) |
| HSL | hsl(159, 81%, 49%) |
| OKLCH | oklch(81% 0.177 161.1) |
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 #18E39B | 1.68:1 | Fails | Lc -32.8 | Non-text elements, placeholder text |
| Black text on #18E39B | 12.49:1 | AAA | Lc 74.7 | Content text, not long reading |
| #18E39B text on white | 1.68:1 | Fails | Lc 29.1 | Dividers and decoration only |
| #18E39B text on black | 12.49:1 | AAA | Lc -73.8 | 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
#E8FBF0
oklch(97.1% 0.025 160.6)
-
Step 100
100
#CDF5DF
oklch(93.6% 0.051 161.2)
-
Step 200
200
#9DEEC4
oklch(88.5% 0.099 160.9)
-
Step 300
300 (this color)
#18E39B
oklch(81% 0.177 161.1)
-
Step 400
400
#00BE80
oklch(70.8% 0.158 161)
-
Step 500
500
#00A36D
oklch(63.2% 0.141 160.9)
-
Step 600
600
#00895B
oklch(55.6% 0.124 161)
-
Step 700
700
#00734C
oklch(49.1% 0.109 161.2)
-
Step 800
800
#005E3E
oklch(42.6% 0.094 161.6)
-
Step 900
900
#004F33
oklch(37.8% 0.084 161.3)
-
Step 950
950
#002F1D
oklch(27% 0.059 161.7)
#18E39B 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) | #E0D197 | 0.169 |
| Deuteranopia (no green cones) | #CAC1A0 | 0.164 |
| Tritanopia (no blue cones) | #00E2D0 | 0.074 |
| Achromatopsia (no color) | #C8C8C8 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18E39B
#18E39B
oklch(81% 0.177 161.1)
- #FF9ADC
#FF9ADC
oklch(81% 0.144 341.2)
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 #18E39B, closest first.
No curated palette has a color within ΔE 0.04 of #18E39B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.011
- Weird Green #3AE57F ΔE 0.036
- Emerald #06D6A0 ΔE 0.040
- Aqua Marine #2EE8BB ΔE 0.043
- Seaweed #18D17B ΔE 0.056
- Turquoise Green #04F489 ΔE 0.059
- Greenish Turquoise #00FBB0 ΔE 0.065
- Medium Spring Green #00FA9A ΔE 0.065
Use #18E39B 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.