#64AFDE
Closest named color: Greyblue (#77A1B5). oklch(72.4% 0.101 237.9), rgb(100, 175, 222).
Aa
Black text reads best on this color (8.72:1).
About this color
#64AFDE is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.101 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.062 away. Black text reads best on it, at 8.72:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #64AFDE |
| RGB | rgb(100, 175, 222) |
| HSL | hsl(203, 65%, 63%) |
| OKLCH | oklch(72.4% 0.101 237.9) |
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 #64AFDE | 2.40:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #64AFDE | 8.72:1 | AAA | Lc 56.8 | Large or bold text, headings |
| #64AFDE text on white | 2.40:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #64AFDE text on black | 8.72:1 | AAA | Lc -54.8 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C4DDEE
oklch(88.4% 0.036 237.6)
-
Step 300
300
#9BC7E5
oklch(80.9% 0.063 238.4)
-
Step 400
400 (this color)
#64AFDE
oklch(72.4% 0.101 237.9)
-
Step 500
500
#2293CE
oklch(63.1% 0.13 238)
-
Step 600
600
#007CB2
oklch(55.6% 0.123 237.7)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557C
oklch(42.7% 0.094 237.9)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#062A3D
oklch(27.1% 0.053 236.9)
#64AFDE 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) | #9AAEE0 | 0.060 |
| Deuteranopia (no green cones) | #89A1DD | 0.051 |
| Tritanopia (no blue cones) | #00BBBF | 0.080 |
| Achromatopsia (no color) | #A7A7A7 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64AFDE
#64AFDE
oklch(72.4% 0.101 237.9)
- #D69664
#D69664
oklch(72.5% 0.101 58.3)
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 #64AFDE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.062
- Deep Sky Blue #00BFFF ΔE 0.062
- Turquoise Blue #06B1C4 ΔE 0.065
- Carolina Blue #8AB8FE ΔE 0.066
- Bluegrey #85A3B2 ΔE 0.067
- Vivid Sky Blue #4CC9F0 ΔE 0.069
- Bluey Grey #89A0B0 ΔE 0.073
- Lightblue #7BC8F6 ΔE 0.076
Use #64AFDE 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.