#15E4C4
Closest named color: Aqua Marine (#2EE8BB). oklch(82.3% 0.15 177.5), rgb(21, 228, 196).
Aa
Black text reads best on this color (12.92:1).
About this color
#15E4C4 is a light, vivid teal or cyan. In OKLCH its lightness is 82%, its chroma 0.150 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.020 away. Black text reads best on it, at 12.92:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 12.92:1 |
| White text | 1.62:1 |
Values
| HEX | #15E4C4 |
| RGB | rgb(21, 228, 196) |
| HSL | hsl(171, 83%, 49%) |
| OKLCH | oklch(82.3% 0.15 177.5) |
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 #15E4C4 | 1.62:1 | Fails | Lc -30.8 | Non-text elements, placeholder text |
| Black text on #15E4C4 | 12.92:1 | AAA | Lc 76.5 | Fine for body text |
| #15E4C4 text on white | 1.62:1 | Fails | Lc 27.3 | Dividers and decoration only |
| #15E4C4 text on black | 12.92:1 | AAA | Lc -75.7 | 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
#E8FAF5
oklch(97% 0.02 177.5)
-
Step 100
100
#CCF4E9
oklch(93.6% 0.044 176.8)
-
Step 200
200
#9CECD8
oklch(88.6% 0.084 176.8)
-
Step 300
300 (this color)
#15E4C4
oklch(82.3% 0.15 177.5)
-
Step 400
400
#00BBA0
oklch(70.8% 0.131 177.4)
-
Step 500
500
#00A089
oklch(63.1% 0.116 177.6)
-
Step 600
600
#008673
oklch(55.5% 0.102 178.1)
-
Step 700
700
#007160
oklch(49.1% 0.091 177.4)
-
Step 800
800
#005D4E
oklch(42.8% 0.079 176.7)
-
Step 900
900
#004D41
oklch(37.6% 0.069 177.7)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#15E4C4 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) | #DAD5C3 | 0.157 |
| Deuteranopia (no green cones) | #C3C4C7 | 0.150 |
| Tritanopia (no blue cones) | #00E8DA | 0.029 |
| Achromatopsia (no color) | #CBCBCB | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15E4C4
#15E4C4
oklch(82.3% 0.15 177.5)
- #FFA7C5
#FFA7C5
oklch(82.3% 0.109 357.8)
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 #15E4C4, closest first.
No curated palette has a color within ΔE 0.04 of #15E4C4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.020
- Turquoise #40E0D0 ΔE 0.027
- Emerald #06D6A0 ΔE 0.055
- Bright Teal #01F9C6 ΔE 0.059
- Medium Turquoise #48D1CC ΔE 0.059
- Seafoam Blue #78D1B6 ΔE 0.062
- Medium Aquamarine #66CDAA ΔE 0.064
- Aqua Green #12E193 ΔE 0.065
Use #15E4C4 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.