#63D5CF
Closest named color: Medium Turquoise (#48D1CC). oklch(80.5% 0.104 190.6), rgb(99, 213, 207).
Aa
Black text reads best on this color (11.94:1).
About this color
#63D5CF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.104 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.022 away. Black text reads best on it, at 11.94:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 11.94:1 |
| White text | 1.75:1 |
Values
| HEX | #63D5CF |
| RGB | rgb(99, 213, 207) |
| HSL | hsl(177, 58%, 61%) |
| OKLCH | oklch(80.5% 0.104 190.6) |
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 #63D5CF | 1.75:1 | Fails | Lc -35.8 | Non-text elements, placeholder text |
| Black text on #63D5CF | 11.94:1 | AAA | Lc 71.9 | Content text, not long reading |
| #63D5CF text on white | 1.75:1 | Fails | Lc 31.9 | Non-text elements, placeholder text |
| #63D5CF text on black | 11.94:1 | AAA | Lc -70.8 | 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
#ECF9F7
oklch(97.2% 0.014 186)
-
Step 100
100
#D4F1EE
oklch(93.6% 0.031 189.1)
-
Step 200
200
#ADE6E2
oklch(88.5% 0.058 190.8)
-
Step 300
300 (this color)
#63D5CF
oklch(80.5% 0.104 190.6)
-
Step 400
400
#00B8B2
oklch(70.6% 0.122 190.6)
-
Step 500
500
#009E99
oklch(63.1% 0.109 190.8)
-
Step 600
600
#008580
oklch(55.7% 0.096 190.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005C58
oklch(42.8% 0.074 189.6)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#63D5CF 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) | #CACBCF | 0.110 |
| Deuteranopia (no green cones) | #B7BED0 | 0.102 |
| Tritanopia (no blue cones) | #00DAD3 | 0.034 |
| Achromatopsia (no color) | #C3C3C3 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63D5CF
#63D5CF
oklch(80.5% 0.104 190.6)
- #FAA3AF
#FAA3AF
oklch(80.5% 0.104 10.7)
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 #63D5CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.022
- Turquoise #40E0D0 ΔE 0.034
- Seafoam Blue #78D1B6 ΔE 0.034
- Pale Teal #82CBB2 ΔE 0.043
- Aqua Blue #02D8E9 ΔE 0.045
- Dark Turquoise #00CED1 ΔE 0.045
- Tiffany Blue #94D2BD ΔE 0.045
- Medium Aquamarine #66CDAA ΔE 0.050
Use #63D5CF 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.