#63C7EF#63C7EF

#63C7EF is a light, moderate cyan. Relative luminance 0.497; OKLCH L 78.5% C 0.109 H 226.9°. Best body text is #000000 at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#63C7EF
RGB	rgb(99, 199, 239)
HSL	hsl(197, 81%, 66%)
HSV	hsv(197, 59%, 94%)
CMYK	cmyk(58.6%, 16.7%, 0%, 6.3%)
CIE-LAB	lab(75.90, -17.90, -28.60)
CIE-LCH	lch(75.90, 33.74, 237.96°)
OKLab	oklab(78.49% -0.0746 -0.0797)
OKLCH	oklch(78.49% 0.109 226.9)
XYZ	xyz(41.1429, 49.7275, 89.0748)
Luminance	0.4973 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C7EF #EF8B63

analogous

#63EFD1 #63C7EF #6381EF

triadic

#63C7EF #EF63C7 #C7EF63

tetradic

#63C7EF #D163EF #EF8B63 #81EF63

square

#63C7EF #D163EF #EF8B63 #81EF63

split-complementary

#63C7EF #EF6381 #EFD163

monochromatic

#1491C4 #2BB3E9 #63C7EF #9BDBF5 #D2EFFA

Accessibility & contrast

On white

1.92

#63C7EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.95

#63C7EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C7EF

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C7EF	#FFFFFF	#000000	##000000
##63C7EF	1.00	1.92	10.95	10.95
#FFFFFF	1.92	1.00	21.00	21.00
#000000	10.95	21.00	1.00	1.00
##000000	10.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2C4F1

Deuteranopia (green-blind)

#9EB5EF

Tritanopia (blue-blind)

#00D3D4

Achromatopsia (no color)

#BBBBBB

Design tokens & code

CSS

--color: #63c7ef;
/* rgb */ color: rgb(99, 199, 239);
/* oklch */ color: oklch(78.5% 0.109 226.9);

Tailwind

colors: {
  custom: {
    50: '#9bd8f4',
    500: '#63c7ef',
    950: '#000000',
  },
}

SCSS

$custom: #63c7ef;
$custom-light: #9bd8f4;
$custom-dark: #000000;

JSON

{
  "hex": "#63c7ef",
  "rgb": {
    "r": 99,
    "g": 199,
    "b": 239
  },
  "hsl": {
    "h": 197.143,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.7849,
    "c": 0.10917,
    "h": 226.9
  },
  "luminance": 0.49731
}

Semantic roles & 50–950 ramp

primary

#63C7EF

secondary

#EECDC0

accent

#4508DE

background

#FAFDFE

surface

#F4FAFD

border

#CED3D5

text

#0F1417

muted

#7F8385

Preview Lab

Preview with #63C7EF

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

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