#64A9FF
Closest named color: Cornflower Blue (#6495ED). oklch(72.7% 0.144 254.8), rgb(100, 169, 255).
Aa
Black text reads best on this color (8.66:1).
About this color
#64A9FF is a medium-light, vivid blue. In OKLCH its lightness is 73%, its chroma 0.144 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.055 away. Black text reads best on it, at 8.66:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.66:1 |
| White text | 2.42:1 |
Values
| HEX | #64A9FF |
| RGB | rgb(100, 169, 255) |
| HSL | hsl(213, 100%, 70%) |
| OKLCH | oklch(72.7% 0.144 254.8) |
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 #64A9FF | 2.42:1 | Fails | Lc -52.5 | Large or bold text, headings |
| Black text on #64A9FF | 8.66:1 | AAA | Lc 56.5 | Large or bold text, headings |
| #64A9FF text on white | 2.42:1 | Fails | Lc 47.5 | Large or bold text, headings |
| #64A9FF text on black | 8.66:1 | AAA | Lc -54.5 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C3DBFA
oklch(88.4% 0.05 254.9)
-
Step 300
300
#99C4FA
oklch(80.9% 0.09 254.4)
-
Step 400
400 (this color)
#64A9FF
oklch(72.7% 0.144 254.8)
-
Step 500
500
#2888F5
oklch(63% 0.185 255)
-
Step 600
600
#0071DA
oklch(55.6% 0.182 254.8)
-
Step 700
700
#005FB9
oklch(49.2% 0.161 254.8)
-
Step 800
800
#004D99
oklch(42.7% 0.14 255)
-
Step 900
900
#03407F
oklch(37.6% 0.121 254.9)
-
Step 950
950
#07264A
oklch(26.9% 0.076 254.9)
#64A9FF 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) | #84AEFF | 0.037 |
| Deuteranopia (no green cones) | #6FA0FD | 0.024 |
| Tritanopia (no blue cones) | #00BDC8 | 0.120 |
| Achromatopsia (no color) | #A6A6A6 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64A9FF
#64A9FF
oklch(72.7% 0.144 254.8)
- #DB9723
#DB9723
oklch(72.6% 0.144 74.4)
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 #64A9FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.055
- Periwinkle Blue #8F99FB ΔE 0.058
- Carolina Blue #8AB8FE ΔE 0.060
- Chefchaouen Blue #4895EF ΔE 0.064
- Deep Sky Blue #00BFFF ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.084
- Dark Sky Blue #448EE4 ΔE 0.086
- Soft Blue #6488EA ΔE 0.087
Use #64A9FF 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.