#63B4E7#63B4E7

#63B4E7 is a light, moderate cyan. Relative luminance 0.411; OKLCH L 73.9% C 0.109 H 238.3°. Best body text is #000000 at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#63B4E7
RGB	rgb(99, 180, 231)
HSL	hsl(203, 73%, 65%)
HSV	hsv(203, 57%, 91%)
CMYK	cmyk(57.1%, 22.1%, 0%, 9.4%)
CIE-LAB	lab(70.22, -10.25, -33.03)
CIE-LCH	lch(70.22, 34.58, 252.75°)
OKLab	oklab(73.87% -0.0571 -0.0924)
OKLCH	oklch(73.87% 0.109 238.3)
XYZ	xyz(35.8853, 41.0614, 81.6203)
Luminance	0.4107 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4E7 #E79663

analogous

#63E7D8 #63B4E7 #6372E7

triadic

#63B4E7 #E763B4 #B4E763

tetradic

#63B4E7 #D863E7 #E79663 #72E763

square

#63B4E7 #D863E7 #E79663 #72E763

split-complementary

#63B4E7 #E76372 #E7D863

monochromatic

#1C79B4 #2E9ADF #63B4E7 #98CDEF #CDE7F7

Accessibility & contrast

On white

2.28

#63B4E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.21

#63B4E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4E7

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4E7	#FFFFFF	#000000	##000000
##63B4E7	1.00	2.28	9.21	9.21
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.21	21.00	1.00	1.00
##000000	9.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB3E9

Deuteranopia (green-blind)

#8BA6E6

Tritanopia (blue-blind)

#00C1C5

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b4e7;
/* rgb */ color: rgb(99, 180, 231);
/* oklch */ color: oklch(73.9% 0.109 238.3);

Tailwind

colors: {
  custom: {
    50: '#99caee',
    500: '#63b4e7',
    950: '#000000',
  },
}

SCSS

$custom: #63b4e7;
$custom-light: #99caee;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4e7",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 231
  },
  "hsl": {
    "h": 203.182,
    "s": 73.333,
    "l": 64.706
  },
  "oklch": {
    "l": 0.7387,
    "c": 0.10862,
    "h": 238.3
  },
  "luminance": 0.41065
}

Semantic roles & 50–950 ramp

primary

#63B4E7

secondary

#EACEBC

accent

#5C10D5

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B4E7

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

Preview Lab → · Contrast checker → · Palette generator →