#63B6CF
Closest named color: Turquoise Blue (#06B1C4). oklch(73.3% 0.088 219.7), rgb(99, 182, 207).
Aa
Black text reads best on this color (9.12:1).
About this color
#63B6CF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.088 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.052 away. Black text reads best on it, at 9.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.12:1 |
| White text | 2.30:1 |
Values
| HEX | #63B6CF |
| RGB | rgb(99, 182, 207) |
| HSL | hsl(194, 53%, 60%) |
| OKLCH | oklch(73.3% 0.088 219.7) |
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 #63B6CF | 2.30:1 | Fails | Lc -50.1 | Large or bold text, headings |
| Black text on #63B6CF | 9.12:1 | AAA | Lc 58.7 | Large or bold text, headings |
| #63B6CF text on white | 2.30:1 | Fails | Lc 45.2 | Large or bold text, headings |
| #63B6CF text on black | 9.12:1 | AAA | Lc -56.9 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFEDF1
oklch(93.7% 0.016 216.7)
-
Step 200
200
#C4DEE7
oklch(88.4% 0.03 220.6)
-
Step 300
300
#99CAD9
oklch(81% 0.055 218.6)
-
Step 400
400 (this color)
#63B6CF
oklch(73.3% 0.088 219.7)
-
Step 500
500
#0B99B8
oklch(63.2% 0.113 219.3)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950
#032C36
oklch(27.2% 0.047 218.5)
#63B6CF 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) | #A6B2D0 | 0.074 |
| Deuteranopia (no green cones) | #96A6CF | 0.067 |
| Tritanopia (no blue cones) | #18BEBE | 0.056 |
| Achromatopsia (no color) | #ABABAB | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B6CF
#63B6CF
oklch(73.3% 0.088 219.7)
- #D9967F
#D9967F
oklch(73.3% 0.088 39.7)
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 #63B6CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.052
- Vivid Sky Blue #4CC9F0 ΔE 0.059
- Greyblue #77A1B5 ΔE 0.060
- Bluegrey #85A3B2 ΔE 0.061
- Light Grey Blue #9DBCD4 ΔE 0.067
- Cool Steel #97A7B3 ΔE 0.067
- Light Cornflower Blue #98C1D9 ΔE 0.068
- Bluey Grey #89A0B0 ΔE 0.069
Use #63B6CF 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.