#63B1EC#63B1EC

#63B1EC is a light, moderate cyan. Relative luminance 0.402; OKLCH L 73.4% C 0.116 H 243.1°. Best body text is #000000 at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#63B1EC
RGB	rgb(99, 177, 236)
HSL	hsl(206, 78%, 66%)
HSV	hsv(206, 58%, 93%)
CMYK	cmyk(58.1%, 25%, 0%, 7.5%)
CIE-LAB	lab(69.58, -7.09, -36.75)
CIE-LCH	lch(69.58, 37.43, 259.08°)
OKLab	oklab(73.43% -0.0523 -0.1031)
OKLCH	oklch(73.43% 0.116 243.1)
XYZ	xyz(36.0025, 40.1498, 85.1930)
Luminance	0.4015 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B1EC #EC9E63

analogous

#63ECE2 #63B1EC #636CEC

triadic

#63B1EC #EC63B1 #B1EC63

tetradic

#63B1EC #E263EC #EC9E63 #6CEC63

square

#63B1EC #E263EC #EC9E63 #6CEC63

split-complementary

#63B1EC #EC636C #ECE263

monochromatic

#1776BE #2C96E5 #63B1EC #9ACCF3 #D0E8F9

Accessibility & contrast

On white

2.33

#63B1EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.03

#63B1EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B1EC

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B1EC	#FFFFFF	#000000	##000000
##63B1EC	1.00	2.33	9.03	9.03
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.03	21.00	1.00	1.00
##000000	9.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97B2EF

Deuteranopia (green-blind)

#85A4EB

Tritanopia (blue-blind)

#00BFC5

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b1ec;
/* rgb */ color: rgb(99, 177, 236);
/* oklch */ color: oklch(73.4% 0.116 243.1);

Tailwind

colors: {
  custom: {
    50: '#9ac8f2',
    500: '#63b1ec',
    950: '#000000',
  },
}

SCSS

$custom: #63b1ec;
$custom-light: #9ac8f2;
$custom-dark: #000000;

JSON

{
  "hex": "#63b1ec",
  "rgb": {
    "r": 99,
    "g": 177,
    "b": 236
  },
  "hsl": {
    "h": 205.839,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.73428,
    "c": 0.11559,
    "h": 243.1
  },
  "luminance": 0.40153
}

Semantic roles & 50–950 ramp

primary

#63B1EC

secondary

#ECD2BF

accent

#640BDB

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B1EC

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

Preview Lab → · Contrast checker → · Palette generator →