#63A3EB#63A3EB

#63A3EB is a light, vivid cyan. Relative luminance 0.348; OKLCH L 70.3% C 0.125 H 252.5°. Best body text is #000000 at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#63A3EB
RGB	rgb(99, 163, 235)
HSL	hsl(212, 77%, 65%)
HSV	hsv(212, 58%, 92%)
CMYK	cmyk(57.9%, 30.6%, 0%, 7.8%)
CIE-LAB	lab(65.63, 0.41, -42.37)
CIE-LCH	lch(65.63, 42.37, 270.56°)
OKLab	oklab(70.3% -0.0376 -0.1194)
OKLCH	oklch(70.3% 0.125 252.5)
XYZ	xyz(33.2328, 34.8423, 83.5551)
Luminance	0.3484 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63A3EB #EBAB63

analogous

#63E7EB #63A3EB #6763EB

triadic

#63A3EB #EB63A3 #A3EB63

tetradic

#63A3EB #EB63E7 #EBAB63 #63EB67

square

#63A3EB #EB63E7 #EBAB63 #63EB67

split-complementary

#63A3EB #EB6763 #E7EB63

monochromatic

#1865BC #2D83E4 #63A3EB #99C3F2 #CFE3F9

Accessibility & contrast

On white

2.64

#63A3EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.97

#63A3EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63A3EB

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63A3EB	#FFFFFF	#000000	##000000
##63A3EB	1.00	2.64	7.97	7.97
#FFFFFF	2.64	1.00	21.00	21.00
#000000	7.97	21.00	1.00	1.00
##000000	7.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#85A7EE

Deuteranopia (green-blind)

#7399EA

Tritanopia (blue-blind)

#00B4BD

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #63a3eb;
/* rgb */ color: rgb(99, 163, 235);
/* oklch */ color: oklch(70.3% 0.125 252.5);

Tailwind

colors: {
  custom: {
    50: '#99bef1',
    500: '#63a3eb',
    950: '#000000',
  },
}

SCSS

$custom: #63a3eb;
$custom-light: #99bef1;
$custom-dark: #000000;

JSON

{
  "hex": "#63a3eb",
  "rgb": {
    "r": 99,
    "g": 163,
    "b": 235
  },
  "hsl": {
    "h": 211.765,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.70304,
    "c": 0.12522,
    "h": 252.5
  },
  "luminance": 0.34845
}

Semantic roles & 50–950 ramp

primary

#63A3EB

secondary

#ECD6BE

accent

#790CDA

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0F1217

muted

#7E8185

Preview Lab

Preview with #63A3EB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →