#18E2D0
Closest named color: Turquoise (#40E0D0). oklch(82.2% 0.143 184.6), rgb(24, 226, 208).
Aa
Black text reads best on this color (12.82:1).
About this color
#18E2D0 is a light, vivid teal or cyan. In OKLCH its lightness is 82%, its chroma 0.143 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.012 away. Black text reads best on it, at 12.82:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.82:1 |
| White text | 1.63:1 |
Values
| HEX | #18E2D0 |
| RGB | rgb(24, 226, 208) |
| HSL | hsl(175, 81%, 49%) |
| OKLCH | oklch(82.2% 0.143 184.6) |
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 #18E2D0 | 1.63:1 | Fails | Lc -31.3 | Non-text elements, placeholder text |
| Black text on #18E2D0 | 12.82:1 | AAA | Lc 76.1 | Fine for body text |
| #18E2D0 text on white | 1.63:1 | Fails | Lc 27.7 | Dividers and decoration only |
| #18E2D0 text on black | 12.82:1 | AAA | Lc -75.2 | Fine for body text |
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
#E8FAF7
oklch(97.1% 0.019 184.9)
-
Step 100
100
#CCF3ED
oklch(93.5% 0.041 185.2)
-
Step 200
200
#9CEBDF
oklch(88.6% 0.079 183.9)
-
Step 300
300 (this color)
#18E2D0
oklch(82.2% 0.143 184.6)
-
Step 400
400
#00B9AA
oklch(70.6% 0.125 184.7)
-
Step 500
500
#009F92
oklch(63.2% 0.111 184.7)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#18E2D0 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) | #D6D4CF | 0.151 |
| Deuteranopia (no green cones) | #BEC3D2 | 0.143 |
| Tritanopia (no blue cones) | #00E7DC | 0.018 |
| Achromatopsia (no color) | #CACACA | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18E2D0
#18E2D0
oklch(82.2% 0.143 184.6)
- #FFA8BC
#FFA8BC
oklch(82.2% 0.105 4.6)
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 #18E2D0, closest first.
No curated palette has a color within ΔE 0.04 of #18E2D0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.012
- Aqua Marine #2EE8BB ΔE 0.038
- Medium Turquoise #48D1CC ΔE 0.046
- Aqua Blue #02D8E9 ΔE 0.052
- Dark Turquoise #00CED1 ΔE 0.059
- Seafoam Blue #78D1B6 ΔE 0.059
- Bright Aqua #0BF9EA ΔE 0.064
- Medium Aquamarine #66CDAA ΔE 0.065
Use #18E2D0 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.