#64A3EE
Closest named color: Cornflower Blue (#6495ED). oklch(70.5% 0.129 253.8), rgb(100, 163, 238).
Aa
Black text reads best on this color (8.01:1).
About this color
#64A3EE is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.129 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.038 away. Black text reads best on it, at 8.01:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.01:1 |
| White text | 2.61:1 |
Values
| HEX | #64A3EE |
| RGB | rgb(100, 163, 238) |
| HSL | hsl(213, 80%, 66%) |
| OKLCH | oklch(70.5% 0.129 253.8) |
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 #64A3EE | 2.61:1 | Fails | Lc -56.1 | Large or bold text, headings |
| Black text on #64A3EE | 8.01:1 | AAA | Lc 53.1 | Large or bold text, headings |
| #64A3EE text on white | 2.61:1 | Fails | Lc 50.9 | Large or bold text, headings |
| #64A3EE text on black | 8.01:1 | AAA | Lc -51.0 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF7
oklch(88.4% 0.045 254.5)
-
Step 300
300
#9DC4F4
oklch(80.9% 0.08 253.9)
-
Step 400
400 (this color)
#64A3EE
oklch(70.5% 0.129 253.8)
-
Step 500
500
#358AE9
oklch(63% 0.164 253.9)
-
Step 600
600
#0072D6
oklch(55.6% 0.176 253.8)
-
Step 700
700
#0060B5
oklch(49.2% 0.155 253.6)
-
Step 800
800
#004E96
oklch(42.7% 0.135 253.8)
-
Step 900
900
#0D4278
oklch(37.8% 0.106 253.3)
-
Step 950
950
#0B2746
oklch(27% 0.067 253.4)
#64A3EE 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) | #84A7F1 | 0.038 |
| Deuteranopia (no green cones) | #729AEC | 0.026 |
| Tritanopia (no blue cones) | #00B4BE | 0.109 |
| Achromatopsia (no color) | #A0A0A0 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64A3EE
#64A3EE
oklch(70.5% 0.129 253.8)
- #CF9236
#CF9236
oklch(70.4% 0.128 73.6)
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 #64A3EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.038
- Chefchaouen Blue #4895EF ΔE 0.049
- Periwinkle Blue #8F99FB ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.068
- Soft Blue #6488EA ΔE 0.071
- Perrywinkle #8F8CE7 ΔE 0.072
- Carolina Blue #8AB8FE ΔE 0.075
- Deep Sky Blue #00BFFF ΔE 0.078
Use #64A3EE 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.