#64AAE4
Closest named color: Cornflower Blue (#6495ED). oklch(71.5% 0.111 245.2), rgb(100, 170, 228).
Aa
Black text reads best on this color (8.41:1).
About this color
#64AAE4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.111 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.062 away. Black text reads best on it, at 8.41:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.41:1 |
| White text | 2.49:1 |
Values
| HEX | #64AAE4 |
| RGB | rgb(100, 170, 228) |
| HSL | hsl(207, 70%, 64%) |
| OKLCH | oklch(71.5% 0.111 245.2) |
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 #64AAE4 | 2.49:1 | Fails | Lc -53.9 | Large or bold text, headings |
| Black text on #64AAE4 | 8.41:1 | AAA | Lc 55.2 | Large or bold text, headings |
| #64AAE4 text on white | 2.49:1 | Fails | Lc 48.8 | Large or bold text, headings |
| #64AAE4 text on black | 8.41:1 | AAA | Lc -53.1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C5DCF1
oklch(88.4% 0.038 245.8)
-
Step 300
300
#9CC6EB
oklch(80.9% 0.069 245.4)
-
Step 400
400 (this color)
#64AAE4
oklch(71.5% 0.111 245.2)
-
Step 500
500
#2B90D9
oklch(63.1% 0.142 245.3)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#05456F
oklch(37.7% 0.092 245.3)
-
Step 950
950
#082941
oklch(27.1% 0.058 244.7)
#64AAE4 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) | #91ABE7 | 0.050 |
| Deuteranopia (no green cones) | #809EE3 | 0.041 |
| Tritanopia (no blue cones) | #00B8BE | 0.092 |
| Achromatopsia (no color) | #A4A4A4 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64AAE4
#64AAE4
oklch(71.5% 0.111 245.2)
- #D39454
#D39454
oklch(71.6% 0.111 64.8)
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 #64AAE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.062
- Deep Sky Blue #00BFFF ΔE 0.066
- Carolina Blue #8AB8FE ΔE 0.067
- Greyblue #77A1B5 ΔE 0.068
- Chefchaouen Blue #4895EF ΔE 0.071
- Bluegrey #85A3B2 ΔE 0.075
- Turquoise Blue #06B1C4 ΔE 0.076
- Periwinkle Blue #8F99FB ΔE 0.077
Use #64AAE4 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.