#63D5DD
Closest named color: Medium Turquoise (#48D1CC). oklch(81% 0.104 201.6), rgb(99, 213, 221).
Aa
Black text reads best on this color (12.09:1).
About this color
#63D5DD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.104 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.033 away. Black text reads best on it, at 12.09:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 12.09:1 |
| White text | 1.73:1 |
Values
| HEX | #63D5DD |
| RGB | rgb(99, 213, 221) |
| HSL | hsl(184, 64%, 63%) |
| OKLCH | oklch(81% 0.104 201.6) |
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 #63D5DD | 1.73:1 | Fails | Lc -35.2 | Non-text elements, placeholder text |
| Black text on #63D5DD | 12.09:1 | AAA | Lc 72.6 | Content text, not long reading |
| #63D5DD text on white | 1.73:1 | Fails | Lc 31.3 | Non-text elements, placeholder text |
| #63D5DD text on black | 12.09:1 | AAA | Lc -71.5 | 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
#EBF8F9
oklch(97% 0.014 202.5)
-
Step 100
100
#D4F0F2
oklch(93.5% 0.029 201.9)
-
Step 200
200
#ADE5E9
oklch(88.5% 0.057 201.7)
-
Step 300
300 (this color)
#63D5DD
oklch(81% 0.104 201.6)
-
Step 400
400
#00B6C0
oklch(70.7% 0.12 201.8)
-
Step 500
500
#009CA5
oklch(63.1% 0.107 202)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#63D5DD 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) | #C7CDDE | 0.105 |
| Deuteranopia (no green cones) | #B4BEDE | 0.098 |
| Tritanopia (no blue cones) | #00DCD7 | 0.041 |
| Achromatopsia (no color) | #C4C4C4 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D5DD
#63D5DD
oklch(81% 0.104 201.6)
- #FDA6A3
#FDA6A3
oklch(81% 0.104 21.8)
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 #63D5DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.033
- Aqua Blue #02D8E9 ΔE 0.035
- Sky Blue #87CEEB ΔE 0.045
- Turquoise #40E0D0 ΔE 0.045
- Dark Turquoise #00CED1 ΔE 0.048
- Vivid Sky Blue #4CC9F0 ΔE 0.052
- Seafoam Blue #78D1B6 ΔE 0.053
- Tiffany Blue #94D2BD ΔE 0.056
Use #63D5DD 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.