#64BBDE
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.1% 0.098 226.6), rgb(100, 187, 222).
Aa
Black text reads best on this color (9.70:1).
About this color
#64BBDE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.098 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.040 away. Black text reads best on it, at 9.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.70:1 |
| White text | 2.16:1 |
Values
| HEX | #64BBDE |
| RGB | rgb(100, 187, 222) |
| HSL | hsl(197, 65%, 63%) |
| OKLCH | oklch(75.1% 0.098 226.6) |
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 #64BBDE | 2.16:1 | Fails | Lc -47.0 | Large or bold text, headings |
| Black text on #64BBDE | 9.70:1 | AAA | Lc 61.6 | Content text, not long reading |
| #64BBDE text on white | 2.16:1 | Fails | Lc 42.3 | Non-text elements, placeholder text |
| #64BBDE text on black | 9.70:1 | AAA | Lc -59.9 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEEDF3
oklch(93.7% 0.018 223.6)
-
Step 200
200
#C3DEEB
oklch(88.5% 0.034 228.4)
-
Step 300
300
#97C9DF
oklch(80.8% 0.061 226.8)
-
Step 400
400 (this color)
#64BBDE
oklch(75.1% 0.098 226.6)
-
Step 500
500
#0097C2
oklch(63.1% 0.122 226.9)
-
Step 600
600
#007FA3
oklch(55.6% 0.107 226.4)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#64BBDE 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) | #A8B8E0 | 0.074 |
| Deuteranopia (no green cones) | #97AADE | 0.067 |
| Tritanopia (no blue cones) | #00C5C6 | 0.067 |
| Achromatopsia (no color) | #B0B0B0 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64BBDE
#64BBDE
oklch(75.1% 0.098 226.6)
- #E29B79
#E29B79
oklch(75.1% 0.097 46.4)
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 #64BBDE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.040
- Lightblue #7BC8F6 ΔE 0.052
- Deep Sky Blue #00BFFF ΔE 0.057
- Light Cornflower Blue #98C1D9 ΔE 0.058
- Bright Sky Blue #02CCFE ΔE 0.060
- Light Grey Blue #9DBCD4 ΔE 0.060
- Sky #82CAFC ΔE 0.064
- Carolina Blue #8AB8FE ΔE 0.065
Use #64BBDE 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.