#63B4EF#63B4EF

#63B4EF is a light, moderate cyan. Relative luminance 0.415; OKLCH L 74.2% C 0.117 H 242.2°. Best body text is #000000 at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#63B4EF
RGB	rgb(99, 180, 239)
HSL	hsl(205, 81%, 66%)
HSV	hsv(205, 59%, 94%)
CMYK	cmyk(58.6%, 24.7%, 0%, 6.3%)
CIE-LAB	lab(70.54, -7.81, -36.88)
CIE-LCH	lch(70.54, 37.70, 258.05°)
OKLab	oklab(74.23% -0.0545 -0.1035)
OKLCH	oklch(74.23% 0.117 242.2)
XYZ	xyz(37.0411, 41.5237, 87.7075)
Luminance	0.4153 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4EF #EF9E63

analogous

#63EFE4 #63B4EF #636EEF

triadic

#63B4EF #EF63B4 #B4EF63

tetradic

#63B4EF #E463EF #EF9E63 #6EEF63

square

#63B4EF #E463EF #EF9E63 #6EEF63

split-complementary

#63B4EF #EF636E #EFE463

monochromatic

#147AC4 #2B99E9 #63B4EF #9BCFF5 #D2E9FA

Accessibility & contrast

On white

2.26

#63B4EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.31

#63B4EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4EF

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4EF	#FFFFFF	#000000	##000000
##63B4EF	1.00	2.26	9.31	9.31
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.31	21.00	1.00	1.00
##000000	9.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB4F2

Deuteranopia (green-blind)

#87A6EE

Tritanopia (blue-blind)

#00C2C8

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #63b4ef;
/* rgb */ color: rgb(99, 180, 239);
/* oklch */ color: oklch(74.2% 0.117 242.2);

Tailwind

colors: {
  custom: {
    50: '#9acaf4',
    500: '#63b4ef',
    950: '#000000',
  },
}

SCSS

$custom: #63b4ef;
$custom-light: #9acaf4;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4ef",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 239
  },
  "hsl": {
    "h": 205.286,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.74232,
    "c": 0.11695,
    "h": 242.2
  },
  "luminance": 0.41527
}

Semantic roles & 50–950 ramp

primary

#63B4EF

secondary

#EED3C0

accent

#6208DE

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B4EF

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

Preview Lab → · Contrast checker → · Palette generator →