#63A3E9#63A3E9

#63A3E9 is a light, vivid cyan. Relative luminance 0.347; OKLCH L 70.2% C 0.123 H 251.9°. Best body text is #000000 at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#63A3E9
RGB	rgb(99, 163, 233)
HSL	hsl(211, 75%, 65%)
HSV	hsv(211, 58%, 91%)
CMYK	cmyk(57.5%, 30%, 0%, 8.6%)
CIE-LAB	lab(65.54, -0.22, -41.41)
CIE-LCH	lch(65.54, 41.41, 269.70°)
OKLab	oklab(70.2% -0.0381 -0.1167)
OKLCH	oklch(70.2% 0.123 251.9)
XYZ	xyz(32.9455, 34.7273, 82.0419)
Luminance	0.3473 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63A3E9 #E9A963

analogous

#63E6E9 #63A3E9 #6663E9

triadic

#63A3E9 #E963A3 #A3E963

tetradic

#63A3E9 #E963E6 #E9A963 #63E966

square

#63A3E9 #E963E6 #E9A963 #63E966

split-complementary

#63A3E9 #E96663 #E6E963

monochromatic

#1A65B8 #2D83E1 #63A3E9 #99C3F1 #CEE2F8

Accessibility & contrast

On white

2.64

#63A3E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.95

#63A3E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63A3E9

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63A3E9	#FFFFFF	#000000	##000000
##63A3E9	1.00	2.64	7.95	7.95
#FFFFFF	2.64	1.00	21.00	21.00
#000000	7.95	21.00	1.00	1.00
##000000	7.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86A6EC

Deuteranopia (green-blind)

#7499E8

Tritanopia (blue-blind)

#00B3BC

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #63a3e9;
/* rgb */ color: rgb(99, 163, 233);
/* oklch */ color: oklch(70.2% 0.123 251.9);

Tailwind

colors: {
  custom: {
    50: '#99bef0',
    500: '#63a3e9',
    950: '#000000',
  },
}

SCSS

$custom: #63a3e9;
$custom-light: #99bef0;
$custom-dark: #000000;

JSON

{
  "hex": "#63a3e9",
  "rgb": {
    "r": 99,
    "g": 163,
    "b": 233
  },
  "hsl": {
    "h": 211.343,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.70204,
    "c": 0.12276,
    "h": 251.9
  },
  "luminance": 0.3473
}

Semantic roles & 50–950 ramp

primary

#63A3E9

secondary

#EBD5BD

accent

#770ED7

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #63A3E9

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

Preview Lab → · Contrast checker → · Palette generator →