#64C8DD
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(78% 0.098 213.2), rgb(100, 200, 221).
Aa
Black text reads best on this color (10.84:1).
About this color
#64C8DD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.098 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.029 away. Black text reads best on it, at 10.84:1.
| Hue family | Teals and cyans |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.84:1 |
| White text | 1.93:1 |
Values
| HEX | #64C8DD |
| RGB | rgb(100, 200, 221) |
| HSL | hsl(190, 64%, 63%) |
| OKLCH | oklch(78% 0.098 213.2) |
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 #64C8DD | 1.93:1 | Fails | Lc -41.2 | Non-text elements, placeholder text |
| Black text on #64C8DD | 10.84:1 | AAA | Lc 67.0 | Content text, not long reading |
| #64C8DD text on white | 1.93:1 | Fails | Lc 36.9 | Non-text elements, placeholder text |
| #64C8DD text on black | 10.84:1 | AAA | Lc -65.5 | 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
#ECF8FB
oklch(97.1% 0.013 214.4)
-
Step 100
100
#D6EFF5
oklch(93.6% 0.028 213.8)
-
Step 200
200
#B1E3EF
oklch(88.5% 0.054 214)
-
Step 300
300 (this color)
#64C8DD
oklch(78% 0.098 213.2)
-
Step 400
400
#00B4CF
oklch(70.8% 0.124 213.4)
-
Step 500
500
#009AB1
oklch(63% 0.11 213.1)
-
Step 600
600
#008295
oklch(55.7% 0.097 212.5)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#64C8DD 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) | #B8C2DE | 0.090 |
| Deuteranopia (no green cones) | #A6B4DD | 0.083 |
| Tritanopia (no blue cones) | #00D1CE | 0.054 |
| Achromatopsia (no color) | #BABABA | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64C8DD
#64C8DD
oklch(78% 0.098 213.2)
- #EFA18F
#EFA18F
oklch(78.1% 0.097 33.6)
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 #64C8DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.029
- Sky Blue #87CEEB ΔE 0.043
- Lightblue #7BC8F6 ΔE 0.044
- Medium Turquoise #48D1CC ΔE 0.045
- Dark Turquoise #00CED1 ΔE 0.048
- Aqua Blue #02D8E9 ΔE 0.049
- Light Cornflower Blue #98C1D9 ΔE 0.051
- Bright Sky Blue #02CCFE ΔE 0.054
Use #64C8DD 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.