#64CCF3
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(79.8% 0.111 225.4), rgb(100, 204, 243).
Aa
Black text reads best on this color (11.47:1).
About this color
#64CCF3 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.111 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.020 away. Black text reads best on it, at 11.47:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.47:1 |
| White text | 1.83:1 |
Values
| HEX | #64CCF3 |
| RGB | rgb(100, 204, 243) |
| HSL | hsl(196, 86%, 67%) |
| OKLCH | oklch(79.8% 0.111 225.4) |
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 #64CCF3 | 1.83:1 | Fails | Lc -38.1 | Non-text elements, placeholder text |
| Black text on #64CCF3 | 11.47:1 | AAA | Lc 69.8 | Content text, not long reading |
| #64CCF3 text on white | 1.83:1 | Fails | Lc 34.0 | Non-text elements, placeholder text |
| #64CCF3 text on black | 11.47:1 | AAA | Lc -68.6 | 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
#ECF8FD
oklch(97.2% 0.014 224.5)
-
Step 100
100
#D4EFFA
oklch(93.6% 0.032 224.2)
-
Step 200
200
#AEE2F8
oklch(88.4% 0.061 225.8)
-
Step 300
300 (this color)
#64CCF3
oklch(79.8% 0.111 225.4)
-
Step 400
400
#00B1DF
oklch(70.7% 0.134 225)
-
Step 500
500
#0097C0
oklch(63% 0.12 225.7)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#64CCF3 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) | #B7C8F5 | 0.086 |
| Deuteranopia (no green cones) | #A2B9F3 | 0.075 |
| Tritanopia (no blue cones) | #00D8D9 | 0.069 |
| Achromatopsia (no color) | #BFBFBF | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64CCF3
#64CCF3
oklch(79.8% 0.111 225.4)
- #F9A680
#F9A680
oklch(79.8% 0.111 45.3)
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 #64CCF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.020
- Lightblue #7BC8F6 ΔE 0.022
- Sky #82CAFC ΔE 0.031
- Sky Blue #87CEEB ΔE 0.033
- Light Sky Blue #87CEFA ΔE 0.034
- Bright Sky Blue #02CCFE ΔE 0.039
- Aqua Blue #02D8E9 ΔE 0.052
- Light Cornflower Blue #98C1D9 ΔE 0.057
Use #64CCF3 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.