#64B0EE
Closest named color: Carolina Blue (#8AB8FE). oklch(73.3% 0.118 245), rgb(100, 176, 238).
Aa
Black text reads best on this color (8.98:1).
About this color
#64B0EE is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.118 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.052 away. Black text reads best on it, at 8.98:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 8.98:1 |
| White text | 2.33:1 |
Values
| HEX | #64B0EE |
| RGB | rgb(100, 176, 238) |
| HSL | hsl(207, 80%, 66%) |
| OKLCH | oklch(73.3% 0.118 245) |
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 #64B0EE | 2.33:1 | Fails | Lc -50.8 | Large or bold text, headings |
| Black text on #64B0EE | 8.98:1 | AAA | Lc 58.1 | Large or bold text, headings |
| #64B0EE text on white | 2.33:1 | Fails | Lc 45.9 | Large or bold text, headings |
| #64B0EE text on black | 8.98:1 | AAA | Lc -56.2 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF8
oklch(93.7% 0.021 245.9)
-
Step 200
200
#C3DDF3
oklch(88.5% 0.041 243.7)
-
Step 300
300
#99C6EE
oklch(80.9% 0.074 245.7)
-
Step 400
400 (this color)
#64B0EE
oklch(73.3% 0.118 245)
-
Step 500
500
#1B90DE
oklch(63.1% 0.151 245.1)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A1
oklch(49% 0.124 245.1)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#052943
oklch(27.1% 0.062 245.1)
#64B0EE 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) | #95B1F1 | 0.053 |
| Deuteranopia (no green cones) | #83A3ED | 0.044 |
| Tritanopia (no blue cones) | #00BFC5 | 0.095 |
| Achromatopsia (no color) | #A9A9A9 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64B0EE
#64B0EE
oklch(73.3% 0.118 245)
- #DC9853
#DC9853
oklch(73.3% 0.118 64.5)
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 #64B0EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.052
- Deep Sky Blue #00BFFF ΔE 0.052
- Vivid Sky Blue #4CC9F0 ΔE 0.068
- Lightblue #7BC8F6 ΔE 0.071
- Cornflower Blue #6495ED ΔE 0.073
- Bright Sky Blue #02CCFE ΔE 0.077
- Periwinkle Blue #8F99FB ΔE 0.079
- Sky #82CAFC ΔE 0.079
Use #64B0EE 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.