#64DEFF
Closest named color: Robin's Egg (#6DEDFD). oklch(84.4% 0.117 218.5), rgb(100, 222, 255).
Aa
Black text reads best on this color (13.43:1).
About this color
#64DEFF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 84%, its chroma 0.117 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg (#6DEDFD), ΔE 0.044 away. Black text reads best on it, at 13.43:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 13.43:1 |
| White text | 1.56:1 |
Values
| HEX | #64DEFF |
| RGB | rgb(100, 222, 255) |
| HSL | hsl(193, 100%, 70%) |
| OKLCH | oklch(84.4% 0.117 218.5) |
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 #64DEFF | 1.56:1 | Fails | Lc -28.8 | Dividers and decoration only |
| Black text on #64DEFF | 13.43:1 | AAA | Lc 78.3 | Fine for body text |
| #64DEFF text on white | 1.56:1 | Fails | Lc 25.5 | Dividers and decoration only |
| #64DEFF text on black | 13.43:1 | AAA | Lc -77.6 | Fine for body text |
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
#EBF8FD
oklch(97.1% 0.015 222.7)
-
Step 100
100
#D2F0F9
oklch(93.6% 0.034 217.7)
-
Step 200
200
#A9E4F6
oklch(88.5% 0.065 218.6)
-
Step 300
300 (this color)
#64DEFF
oklch(84.4% 0.117 218.5)
-
Step 400
400
#00B3D6
oklch(70.8% 0.128 218.5)
-
Step 500
500
#0099B7
oklch(63.1% 0.114 218.3)
-
Step 600
600
#00819A
oklch(55.7% 0.1 217.7)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950
#002C36
oklch(27% 0.048 217.4)
#64DEFF 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) | #C9D8FF | 0.100 |
| Deuteranopia (no green cones) | #B2C7FF | 0.091 |
| Tritanopia (no blue cones) | #00E9E8 | 0.061 |
| Achromatopsia (no color) | #CFCFCF | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64DEFF
#64DEFF
oklch(84.4% 0.117 218.5)
- #FFB8A2
#FFB8A2
oklch(84.3% 0.088 37.9)
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 #64DEFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg #6DEDFD ΔE 0.044
- Light Sky Blue #87CEFA ΔE 0.047
- Sky Blue #87CEEB ΔE 0.047
- Aqua Blue #02D8E9 ΔE 0.053
- Sky #82CAFC ΔE 0.055
- Lightblue #7BC8F6 ΔE 0.057
- Vivid Sky Blue #4CC9F0 ΔE 0.062
- Robin Egg Blue #8AF1FE ΔE 0.064
Use #64DEFF 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.