#18E3AC
Closest named color: Aqua Marine (#2EE8BB). oklch(81.4% 0.164 167.1), rgb(24, 227, 172).
Aa
Black text reads best on this color (12.62:1).
About this color
#18E3AC is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.164 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.023 away. Black text reads best on it, at 12.62:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 12.62:1 |
| White text | 1.66:1 |
Values
| HEX | #18E3AC |
| RGB | rgb(24, 227, 172) |
| HSL | hsl(164, 81%, 49%) |
| OKLCH | oklch(81.4% 0.164 167.1) |
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 #18E3AC | 1.66:1 | Fails | Lc -32.2 | Non-text elements, placeholder text |
| Black text on #18E3AC | 12.62:1 | AAA | Lc 75.2 | Fine for body text |
| #18E3AC text on white | 1.66:1 | Fails | Lc 28.6 | Dividers and decoration only |
| #18E3AC text on black | 12.62:1 | AAA | Lc -74.3 | 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
#E8FAF2
oklch(97% 0.022 167.5)
-
Step 100
100
#CDF5E3
oklch(93.7% 0.048 166.3)
-
Step 200
200
#9DEDCD
oklch(88.6% 0.091 167.2)
-
Step 300
300 (this color)
#18E3AC
oklch(81.4% 0.164 167.1)
-
Step 400
400
#00BC8E
oklch(70.6% 0.144 167.5)
-
Step 500
500
#00A279
oklch(63.2% 0.13 167)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
Step 700
700
#007255
oklch(49% 0.1 167.6)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#18E3AC 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) | #DDD2A9 | 0.163 |
| Deuteranopia (no green cones) | #C7C2B0 | 0.158 |
| Tritanopia (no blue cones) | #00E4D4 | 0.055 |
| Achromatopsia (no color) | #C9C9C9 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18E3AC
#18E3AC
oklch(81.4% 0.164 167.1)
- #FF9FD2
#FF9FD2
oklch(81.4% 0.129 347.2)
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 #18E3AC, closest first.
No curated palette has a color within ΔE 0.04 of #18E3AC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.023
- Aqua Green #12E193 ΔE 0.032
- Emerald #06D6A0 ΔE 0.037
- Turquoise #40E0D0 ΔE 0.057
- Weird Green #3AE57F ΔE 0.058
- Bright Teal #01F9C6 ΔE 0.061
- Medium Aquamarine #66CDAA ΔE 0.066
- Greenish Turquoise #00FBB0 ΔE 0.066
Use #18E3AC 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.