#64AAE0
Closest named color: Greyblue (#77A1B5). oklch(71.4% 0.106 243.3), rgb(100, 170, 224).
Aa
Black text reads best on this color (8.36:1).
About this color
#64AAE0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.106 and its hue 243°. 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 8.36:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.36:1 |
| White text | 2.50:1 |
Values
| HEX | #64AAE0 |
| RGB | rgb(100, 170, 224) |
| HSL | hsl(206, 67%, 64%) |
| OKLCH | oklch(71.4% 0.106 243.3) |
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 #64AAE0 | 2.50:1 | Fails | Lc -54.2 | Large or bold text, headings |
| Black text on #64AAE0 | 8.36:1 | AAA | Lc 54.9 | Large or bold text, headings |
| #64AAE0 text on white | 2.50:1 | Fails | Lc 49.1 | Large or bold text, headings |
| #64AAE0 text on black | 8.36:1 | AAA | Lc -52.9 | 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
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C5DDF0
oklch(88.6% 0.037 241.8)
-
Step 300
300
#9CC6E9
oklch(80.9% 0.067 243.9)
-
Step 400
400 (this color)
#64AAE0
oklch(71.4% 0.106 243.3)
-
Step 500
500
#2C91D5
oklch(63.2% 0.136 243.4)
-
Step 600
600
#007ABC
oklch(55.7% 0.136 243.3)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005483
oklch(42.8% 0.104 243)
-
Step 900
900
#05456D
oklch(37.6% 0.09 244)
-
Step 950
950
#082940
oklch(27% 0.057 243.6)
#64AAE0 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) | #93ABE2 | 0.053 |
| Deuteranopia (no green cones) | #829EDF | 0.042 |
| Tritanopia (no blue cones) | #00B7BC | 0.088 |
| Achromatopsia (no color) | #A3A3A3 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64AAE0
#64AAE0
oklch(71.4% 0.106 243.3)
- #D19459
#D19459
oklch(71.4% 0.106 63.8)
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 #64AAE0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.065
- Deep Sky Blue #00BFFF ΔE 0.068
- Bluegrey #85A3B2 ΔE 0.070
- Carolina Blue #8AB8FE ΔE 0.070
- Turquoise Blue #06B1C4 ΔE 0.071
- Chefchaouen Blue #4895EF ΔE 0.073
- Bluey Grey #89A0B0 ΔE 0.074
Use #64AAE0 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.