#64C4FD
Closest named color: Lightblue (#7BC8F6). oklch(78.5% 0.122 237.2), rgb(100, 196, 253).
Aa
Black text reads best on this color (10.85:1).
About this color
#64C4FD is a light, moderately saturated blue. In OKLCH its lightness is 78%, its chroma 0.122 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Lightblue (#7BC8F6), ΔE 0.027 away. Black text reads best on it, at 10.85:1.
| Hue family | Blues |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Lightblue (#7BC8F6) |
| Black text | 10.85:1 |
| White text | 1.93:1 |
Values
| HEX | #64C4FD |
| RGB | rgb(100, 196, 253) |
| HSL | hsl(202, 97%, 69%) |
| OKLCH | oklch(78.5% 0.122 237.2) |
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 #64C4FD | 1.93:1 | Fails | Lc -41.2 | Non-text elements, placeholder text |
| Black text on #64C4FD | 10.85:1 | AAA | Lc 67.1 | Content text, not long reading |
| #64C4FD text on white | 1.93:1 | Fails | Lc 36.8 | Non-text elements, placeholder text |
| #64C4FD text on black | 10.85:1 | AAA | Lc -65.6 | 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
#ECF7FF
oklch(97% 0.016 239.1)
-
Step 100
100
#D5EEFF
oklch(93.6% 0.035 237.5)
-
Step 200
200
#B1E0FF
oklch(88.4% 0.065 237.4)
-
Step 300
300 (this color)
#64C4FD
oklch(78.5% 0.122 237.2)
-
Step 400
400
#00ACF4
oklch(70.6% 0.155 237.4)
-
Step 500
500
#0094D2
oklch(63.2% 0.138 237.1)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
Step 700
700
#006896
oklch(49.1% 0.108 237.6)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#64C4FD 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) | #A9C3FF | 0.071 |
| Deuteranopia (no green cones) | #94B3FC | 0.061 |
| Tritanopia (no blue cones) | #00D3D7 | 0.088 |
| Achromatopsia (no color) | #BABABA | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64C4FD
#64C4FD
oklch(78.5% 0.122 237.2)
- #F4A467
#F4A467
oklch(78.5% 0.122 57.1)
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 #64C4FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lightblue #7BC8F6 ΔE 0.027
- Vivid Sky Blue #4CC9F0 ΔE 0.031
- Sky #82CAFC ΔE 0.033
- Bright Sky Blue #02CCFE ΔE 0.040
- Deep Sky Blue #00BFFF ΔE 0.045
- Carolina Blue #8AB8FE ΔE 0.045
- Light Sky Blue #87CEFA ΔE 0.045
- Sky Blue #87CEEB ΔE 0.054
Use #64C4FD 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.