#15C4E2
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.5% 0.13 214.2), rgb(21, 196, 226).
Aa
Black text reads best on this color (10.02:1).
About this color
#15C4E2 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.130 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.034 away. Black text reads best on it, at 10.02:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.02:1 |
| White text | 2.09:1 |
Values
| HEX | #15C4E2 |
| RGB | rgb(21, 196, 226) |
| HSL | hsl(189, 83%, 48%) |
| OKLCH | oklch(75.5% 0.13 214.2) |
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 #15C4E2 | 2.09:1 | Fails | Lc -45.0 | Non-text elements, placeholder text |
| Black text on #15C4E2 | 10.02:1 | AAA | Lc 63.6 | Content text, not long reading |
| #15C4E2 text on white | 2.09:1 | Fails | Lc 40.4 | Non-text elements, placeholder text |
| #15C4E2 text on black | 10.02:1 | AAA | Lc -61.9 | 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 400.
-
Step 50
50
#EEF7FA
oklch(97% 0.01 219.6)
-
Step 100
100
#D9EEF4
oklch(93.5% 0.024 216.7)
-
Step 200
200
#B8E1EC
oklch(88.4% 0.045 215.8)
-
Step 300
300
#80CFE1
oklch(81% 0.082 213.8)
-
Step 400
400 (this color)
#15C4E2
oklch(75.5% 0.13 214.2)
-
Step 500
500
#009AB2
oklch(63.1% 0.111 213.9)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#15C4E2 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) | #AFBDE4 | 0.118 |
| Deuteranopia (no green cones) | #96ABE2 | 0.106 |
| Tritanopia (no blue cones) | #00CFCD | 0.050 |
| Achromatopsia (no color) | #B3B3B3 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15C4E2
#15C4E2
oklch(75.5% 0.13 214.2)
- #F68F77
#F68F77
oklch(75.4% 0.13 34)
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 #15C4E2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.034
- Bright Sky Blue #02CCFE ΔE 0.041
- Dark Turquoise #00CED1 ΔE 0.043
- Deep Sky Blue #00BFFF ΔE 0.049
- Aqua Blue #02D8E9 ΔE 0.055
- Medium Turquoise #48D1CC ΔE 0.059
- Turquoise Blue #06B1C4 ΔE 0.062
- Lightblue #7BC8F6 ΔE 0.069
Use #15C4E2 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.