#63D5DB
Closest named color: Medium Turquoise (#48D1CC). oklch(80.9% 0.103 200), rgb(99, 213, 219).
Aa
Black text reads best on this color (12.07:1).
About this color
#63D5DB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.103 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.031 away. Black text reads best on it, at 12.07:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 12.07:1 |
| White text | 1.73:1 |
Values
| HEX | #63D5DB |
| RGB | rgb(99, 213, 219) |
| HSL | hsl(183, 62%, 62%) |
| OKLCH | oklch(80.9% 0.103 200) |
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 #63D5DB | 1.73:1 | Fails | Lc -35.3 | Non-text elements, placeholder text |
| Black text on #63D5DB | 12.07:1 | AAA | Lc 72.5 | Content text, not long reading |
| #63D5DB text on white | 1.73:1 | Fails | Lc 31.4 | Non-text elements, placeholder text |
| #63D5DB text on black | 12.07:1 | AAA | Lc -71.4 | 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
#ADE5E8
oklch(88.5% 0.057 200.3)
-
Step 300
300 (this color)
#63D5DB
oklch(80.9% 0.103 200)
-
Step 400
400
#00B7BE
oklch(70.8% 0.12 199.7)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008489
oklch(55.7% 0.095 199.5)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004C4F
oklch(37.8% 0.064 199.4)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#63D5DB 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) | #C7CDDC | 0.105 |
| Deuteranopia (no green cones) | #B4BEDC | 0.098 |
| Tritanopia (no blue cones) | #00DCD6 | 0.040 |
| Achromatopsia (no color) | #C4C4C4 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D5DB
#63D5DB
oklch(80.9% 0.103 200)
- #FDA6A5
#FDA6A5
oklch(81.1% 0.103 20.3)
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 #63D5DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.031
- Aqua Blue #02D8E9 ΔE 0.036
- Turquoise #40E0D0 ΔE 0.043
- Sky Blue #87CEEB ΔE 0.047
- Dark Turquoise #00CED1 ΔE 0.047
- Seafoam Blue #78D1B6 ΔE 0.050
- Tiffany Blue #94D2BD ΔE 0.054
- Vivid Sky Blue #4CC9F0 ΔE 0.054
Use #63D5DB 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.