#64A3FD
Closest named color: Cornflower Blue (#6495ED). oklch(71.3% 0.148 257.4), rgb(100, 163, 253).
Aa
Black text reads best on this color (8.19:1).
About this color
#64A3FD is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.148 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.040 away. Black text reads best on it, at 8.19:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.19:1 |
| White text | 2.56:1 |
Values
| HEX | #64A3FD |
| RGB | rgb(100, 163, 253) |
| HSL | hsl(215, 97%, 69%) |
| OKLCH | oklch(71.3% 0.148 257.4) |
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 #64A3FD | 2.56:1 | Fails | Lc -55.0 | Large or bold text, headings |
| Black text on #64A3FD | 8.19:1 | AAA | Lc 54.1 | Large or bold text, headings |
| #64A3FD text on white | 2.56:1 | Fails | Lc 49.9 | Large or bold text, headings |
| #64A3FD text on black | 8.19:1 | AAA | Lc -52.0 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFC
oklch(88.5% 0.052 257.4)
-
Step 300
300
#9BC3FC
oklch(80.9% 0.092 257.2)
-
Step 400
400 (this color)
#64A3FD
oklch(71.3% 0.148 257.4)
-
Step 500
500
#3286F8
oklch(63% 0.188 257.4)
-
Step 600
600
#006DE5
oklch(55.6% 0.201 257.4)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800
#004AA1
oklch(42.6% 0.155 257.6)
-
Step 900
900
#0C3F81
oklch(37.7% 0.123 257.4)
-
Step 950
950
#0A254C
oklch(26.9% 0.079 258.2)
#64A3FD 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) | #7DAAFF | 0.034 |
| Deuteranopia (no green cones) | #689BFB | 0.020 |
| Tritanopia (no blue cones) | #00B7C4 | 0.123 |
| Achromatopsia (no color) | #A2A2A2 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64A3FD
#64A3FD
oklch(71.3% 0.148 257.4)
- #D59408
#D59408
oklch(71.3% 0.148 77.1)
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 #64A3FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.040
- Chefchaouen Blue #4895EF ΔE 0.051
- Periwinkle Blue #8F99FB ΔE 0.052
- Soft Blue #6488EA ΔE 0.072
- Perrywinkle #8F8CE7 ΔE 0.073
- Dark Sky Blue #448EE4 ΔE 0.073
- Carolina Blue #8AB8FE ΔE 0.073
- Dodger Blue #1E90FF ΔE 0.075
Use #64A3FD 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.