#63A0FD
Closest named color: Cornflower Blue (#6495ED). oklch(70.6% 0.151 258.6), rgb(99, 160, 253).
Aa
Black text reads best on this color (7.97:1).
About this color
#63A0FD is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.151 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.034 away. Black text reads best on it, at 7.97:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.97:1 |
| White text | 2.63:1 |
Values
| HEX | #63A0FD |
| RGB | rgb(99, 160, 253) |
| HSL | hsl(216, 97%, 69%) |
| OKLCH | oklch(70.6% 0.151 258.6) |
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 #63A0FD | 2.63:1 | Fails | Lc -56.2 | Large or bold text, headings |
| Black text on #63A0FD | 7.97:1 | AAA | Lc 52.9 | Large or bold text, headings |
| #63A0FD text on white | 2.63:1 | Fails | Lc 51.1 | Large or bold text, headings |
| #63A0FD text on black | 7.97:1 | AAA | Lc -50.8 | 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
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9BC2FE
oklch(80.8% 0.095 258.8)
-
Step 400
400 (this color)
#63A0FD
oklch(70.6% 0.151 258.6)
-
Step 500
500
#3585FB
oklch(63.1% 0.193 258.5)
-
Step 600
600
#036BEA
oklch(55.6% 0.209 258.5)
-
Step 700
700
#0059C7
oklch(49% 0.186 258.6)
-
Step 800
800
#0149A5
oklch(42.8% 0.161 258.6)
-
Step 900
900
#0E3E83
oklch(37.7% 0.127 258.7)
-
Step 950
950
#0B254C
oklch(27% 0.079 258.6)
#63A0FD 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) | #78A7FF | 0.031 |
| Deuteranopia (no green cones) | #6399FB | 0.018 |
| Tritanopia (no blue cones) | #00B5C2 | 0.128 |
| Achromatopsia (no color) | #9F9F9F | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A0FD
#63A0FD
oklch(70.6% 0.151 258.6)
- #D19300
#D19300
oklch(70.6% 0.147 78.6)
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 #63A0FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.034
- Chefchaouen Blue #4895EF ΔE 0.044
- Periwinkle Blue #8F99FB ΔE 0.051
- Soft Blue #6488EA ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.067
- Dodger Blue #1E90FF ΔE 0.069
- Perrywinkle #8F8CE7 ΔE 0.069
- Lavender Blue #8B88F8 ΔE 0.071
Use #63A0FD 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.