#15CCDD
Closest named color: Dark Turquoise (#00CED1). oklch(77.3% 0.13 205.6), rgb(21, 204, 221).
Aa
Black text reads best on this color (10.71:1).
About this color
#15CCDD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.130 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.021 away. Black text reads best on it, at 10.71:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.71:1 |
| White text | 1.96:1 |
Values
| HEX | #15CCDD |
| RGB | rgb(21, 204, 221) |
| HSL | hsl(185, 83%, 47%) |
| OKLCH | oklch(77.3% 0.13 205.6) |
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 #15CCDD | 1.96:1 | Fails | Lc -41.5 | Non-text elements, placeholder text |
| Black text on #15CCDD | 10.71:1 | AAA | Lc 66.8 | Content text, not long reading |
| #15CCDD text on white | 1.96:1 | Fails | Lc 37.1 | Non-text elements, placeholder text |
| #15CCDD text on black | 10.71:1 | AAA | Lc -65.3 | 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
#E9F9FB
oklch(97.1% 0.017 205.8)
-
Step 100
100
#CEF2F6
oklch(93.7% 0.038 204.7)
-
Step 200
200
#A0E7F0
oklch(88.4% 0.072 205.9)
-
Step 300
300 (this color)
#15CCDD
oklch(77.3% 0.13 205.6)
-
Step 400
400
#00B5C5
oklch(70.6% 0.121 206)
-
Step 500
500
#009CA9
oklch(63.2% 0.108 205.2)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#15CCDD 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) | #BAC3DE | 0.128 |
| Deuteranopia (no green cones) | #A1B2DD | 0.115 |
| Tritanopia (no blue cones) | #00D5D1 | 0.035 |
| Achromatopsia (no color) | #B9B9B9 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15CCDD
#15CCDD
oklch(77.3% 0.13 205.6)
- #FD938A
#FD938A
oklch(77.3% 0.129 25.6)
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 #15CCDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.021
- Aqua Blue #02D8E9 ΔE 0.033
- Medium Turquoise #48D1CC ΔE 0.036
- Vivid Sky Blue #4CC9F0 ΔE 0.039
- Bright Sky Blue #02CCFE ΔE 0.049
- Turquoise #40E0D0 ΔE 0.068
- Deep Sky Blue #00BFFF ΔE 0.070
- Topaz #13BBAF ΔE 0.072
Use #15CCDD 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.