#63B4EB#63B4EB

#63B4EB is a light, moderate cyan. Relative luminance 0.413; OKLCH L 74.0% C 0.113 H 240.3°. Best body text is #000000 at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#63B4EB
RGB	rgb(99, 180, 235)
HSL	hsl(204, 77%, 65%)
HSV	hsv(204, 58%, 92%)
CMYK	cmyk(57.9%, 23.4%, 0%, 7.8%)
CIE-LAB	lab(70.38, -9.03, -34.96)
CIE-LCH	lch(70.38, 36.11, 255.51°)
OKLab	oklab(74.05% -0.0558 -0.0979)
OKLCH	oklch(74.05% 0.113 240.3)
XYZ	xyz(36.4567, 41.2900, 84.6297)
Luminance	0.4129 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4EB #EB9A63

analogous

#63EBDE #63B4EB #6370EB

triadic

#63B4EB #EB63B4 #B4EB63

tetradic

#63B4EB #DE63EB #EB9A63 #70EB63

square

#63B4EB #DE63EB #EB9A63 #70EB63

split-complementary

#63B4EB #EB6370 #EBDE63

monochromatic

#1879BC #2D9AE4 #63B4EB #99CEF2 #CFE8F9

Accessibility & contrast

On white

2.27

#63B4EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.26

#63B4EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4EB

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4EB	#FFFFFF	#000000	##000000
##63B4EB	1.00	2.27	9.26	9.26
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.26	21.00	1.00	1.00
##000000	9.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB4EE

Deuteranopia (green-blind)

#89A6EA

Tritanopia (blue-blind)

#00C2C7

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b4eb;
/* rgb */ color: rgb(99, 180, 235);
/* oklch */ color: oklch(74.0% 0.113 240.3);

Tailwind

colors: {
  custom: {
    50: '#9acaf1',
    500: '#63b4eb',
    950: '#000000',
  },
}

SCSS

$custom: #63b4eb;
$custom-light: #9acaf1;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4eb",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 235
  },
  "hsl": {
    "h": 204.265,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.74049,
    "c": 0.11272,
    "h": 240.3
  },
  "luminance": 0.41293
}

Semantic roles & 50–950 ramp

primary

#63B4EB

secondary

#ECD1BE

accent

#5F0CDA

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #63B4EB

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

Preview Lab → · Contrast checker → · Palette generator →