#18D8AB
Closest named color: Emerald (#06D6A0). oklch(78.6% 0.152 170.3), rgb(24, 216, 171).
Aa
Black text reads best on this color (11.44:1).
About this color
#18D8AB is a light, vivid teal or cyan. In OKLCH its lightness is 79%, its chroma 0.152 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.015 away. Black text reads best on it, at 11.44:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Emerald (#06D6A0) |
| Black text | 11.44:1 |
| White text | 1.83:1 |
Values
| HEX | #18D8AB |
| RGB | rgb(24, 216, 171) |
| HSL | hsl(166, 80%, 47%) |
| OKLCH | oklch(78.6% 0.152 170.3) |
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 #18D8AB | 1.83:1 | Fails | Lc -37.8 | Non-text elements, placeholder text |
| Black text on #18D8AB | 11.44:1 | AAA | Lc 70.1 | Content text, not long reading |
| #18D8AB text on white | 1.83:1 | Fails | Lc 33.8 | Non-text elements, placeholder text |
| #18D8AB text on black | 11.44:1 | AAA | Lc -68.8 | 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
#E9FAF3
oklch(97.1% 0.02 169.4)
-
Step 100
100
#CEF4E5
oklch(93.6% 0.044 169.5)
-
Step 200
200
#9FECD1
oklch(88.5% 0.085 170.3)
-
Step 300
300 (this color)
#18D8AB
oklch(78.6% 0.152 170.3)
-
Step 400
400
#00BC94
oklch(70.8% 0.139 170.4)
-
Step 500
500
#00A17E
oklch(63.1% 0.125 170.2)
-
Step 600
600
#00876A
oklch(55.5% 0.109 170.8)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#004E3C
oklch(37.7% 0.074 170.6)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#18D8AB 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) | #D1C9A9 | 0.154 |
| Deuteranopia (no green cones) | #BCB9AE | 0.149 |
| Tritanopia (no blue cones) | #00DACB | 0.044 |
| Achromatopsia (no color) | #BFBFBF | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18D8AB
#18D8AB
oklch(78.6% 0.152 170.3)
- #FF90C6
#FF90C6
oklch(78.7% 0.147 350.5)
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 #18D8AB, closest first.
No curated palette has a color within ΔE 0.04 of #18D8AB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.015
- Medium Aquamarine #66CDAA ΔE 0.043
- Aqua Marine #2EE8BB ΔE 0.047
- Aqua Green #12E193 ΔE 0.047
- Turquoise #40E0D0 ΔE 0.055
- Seafoam Blue #78D1B6 ΔE 0.058
- Medium Turquoise #48D1CC ΔE 0.061
- Seaweed #18D17B ΔE 0.061
Use #18D8AB 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.