#63C3CF
Closest named color: Medium Turquoise (#48D1CC). oklch(76.3% 0.092 206.2), rgb(99, 195, 207).
Aa
Black text reads best on this color (10.23:1).
About this color
#63C3CF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.092 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.043 away. Black text reads best on it, at 10.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 10.23:1 |
| White text | 2.05:1 |
Values
| HEX | #63C3CF |
| RGB | rgb(99, 195, 207) |
| HSL | hsl(187, 53%, 60%) |
| OKLCH | oklch(76.3% 0.092 206.2) |
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 #63C3CF | 2.05:1 | Fails | Lc -44.3 | Non-text elements, placeholder text |
| Black text on #63C3CF | 10.23:1 | AAA | Lc 64.1 | Content text, not long reading |
| #63C3CF text on white | 2.05:1 | Fails | Lc 39.8 | Non-text elements, placeholder text |
| #63C3CF text on black | 10.23:1 | AAA | Lc -62.5 | 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
#EDF8F9
oklch(97.1% 0.012 203.5)
-
Step 100
100
#D6EFF3
oklch(93.5% 0.027 208.3)
-
Step 200
200
#B2E3EA
oklch(88.4% 0.051 207.1)
-
Step 300
300 (this color)
#63C3CF
oklch(76.3% 0.092 206.2)
-
Step 400
400
#00B5C6
oklch(70.6% 0.121 206.7)
-
Step 500
500
#009BAA
oklch(63% 0.108 206.9)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#63C3CF 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) | #B6BCD0 | 0.091 |
| Deuteranopia (no green cones) | #A4B0CF | 0.082 |
| Tritanopia (no blue cones) | #0BCAC6 | 0.046 |
| Achromatopsia (no color) | #B5B5B5 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63C3CF
#63C3CF
oklch(76.3% 0.092 206.2)
- #E79B93
#E79B93
oklch(76.3% 0.093 26.1)
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 #63C3CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.043
- Dark Turquoise #00CED1 ΔE 0.044
- Vivid Sky Blue #4CC9F0 ΔE 0.046
- Light Cornflower Blue #98C1D9 ΔE 0.057
- Pale Teal #82CBB2 ΔE 0.059
- Sky Blue #87CEEB ΔE 0.060
- Aqua Blue #02D8E9 ΔE 0.062
- Light Grey Blue #9DBCD4 ΔE 0.062
Use #63C3CF 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.