#63A4EB#63A4EB

#63A4EB is a light, vivid cyan. Relative luminance 0.352; OKLCH L 70.5% C 0.124 H 251.9°. Best body text is #000000 at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#63A4EB
RGB	rgb(99, 164, 235)
HSL	hsl(211, 77%, 65%)
HSV	hsv(211, 58%, 92%)
CMYK	cmyk(57.9%, 30.2%, 0%, 7.8%)
CIE-LAB	lab(65.90, -0.16, -41.94)
CIE-LCH	lch(65.90, 41.94, 269.79°)
OKLab	oklab(70.52% -0.0386 -0.1182)
OKLCH	oklch(70.52% 0.124 251.9)
XYZ	xyz(33.4111, 35.1988, 83.6145)
Luminance	0.3520 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63A4EB #EBAA63

analogous

#63E8EB #63A4EB #6663EB

triadic

#63A4EB #EB63A4 #A4EB63

tetradic

#63A4EB #EB63E8 #EBAA63 #63EB66

square

#63A4EB #EB63E8 #EBAA63 #63EB66

split-complementary

#63A4EB #EB6663 #E8EB63

monochromatic

#1866BC #2D84E4 #63A4EB #99C4F2 #CFE3F9

Accessibility & contrast

On white

2.61

#63A4EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.04

#63A4EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63A4EB

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63A4EB	#FFFFFF	#000000	##000000
##63A4EB	1.00	2.61	8.04	8.04
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.04	21.00	1.00	1.00
##000000	8.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86A7EE

Deuteranopia (green-blind)

#749AEA

Tritanopia (blue-blind)

#00B4BD

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #63a4eb;
/* rgb */ color: rgb(99, 164, 235);
/* oklch */ color: oklch(70.5% 0.124 251.9);

Tailwind

colors: {
  custom: {
    50: '#99bef1',
    500: '#63a4eb',
    950: '#000000',
  },
}

SCSS

$custom: #63a4eb;
$custom-light: #99bef1;
$custom-dark: #000000;

JSON

{
  "hex": "#63a4eb",
  "rgb": {
    "r": 99,
    "g": 164,
    "b": 235
  },
  "hsl": {
    "h": 211.324,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.70522,
    "c": 0.12434,
    "h": 251.9
  },
  "luminance": 0.35202
}

Semantic roles & 50–950 ramp

primary

#63A4EB

secondary

#ECD6BE

accent

#770CDA

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0F1217

muted

#7E8185

Preview Lab

Preview with #63A4EB

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

Preview Lab → · Contrast checker → · Palette generator →