#63B5DF#63B5DF

#63B5DF is a light, moderate cyan. Relative luminance 0.410; OKLCH L 73.7% C 0.101 H 232.7°. Best body text is #000000 at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#63B5DF
RGB	rgb(99, 181, 223)
HSL	hsl(200, 66%, 63%)
HSV	hsv(200, 56%, 87%)
CMYK	cmyk(55.6%, 18.8%, 0%, 12.5%)
CIE-LAB	lab(70.19, -13.20, -28.70)
CIE-LCH	lch(70.19, 31.59, 245.31°)
OKLab	oklab(73.75% -0.061 -0.08)
OKLCH	oklch(73.75% 0.101 232.7)
XYZ	xyz(34.9837, 41.0250, 75.8727)
Luminance	0.4103 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B5DF #DF8D63

analogous

#63DFCB #63B5DF #6377DF

triadic

#63B5DF #DF63B5 #B5DF63

tetradic

#63B5DF #CB63DF #DF8D63 #77DF63

square

#63B5DF #CB63DF #DF8D63 #77DF63

split-complementary

#63B5DF #DF6377 #DFCB63

monochromatic

#2279A6 #309DD5 #63B5DF #96CDE9 #C9E5F4

Accessibility & contrast

On white

2.28

#63B5DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.21

#63B5DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B5DF

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B5DF	#FFFFFF	#000000	##000000
##63B5DF	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)

#A1B3E1

Deuteranopia (green-blind)

#8FA6DE

Tritanopia (blue-blind)

#00C0C3

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b5df;
/* rgb */ color: rgb(99, 181, 223);
/* oklch */ color: oklch(73.7% 0.101 232.7);

Tailwind

colors: {
  custom: {
    50: '#98cbe9',
    500: '#63b5df',
    950: '#000000',
  },
}

SCSS

$custom: #63b5df;
$custom-light: #98cbe9;
$custom-dark: #000000;

JSON

{
  "hex": "#63b5df",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 223
  },
  "hsl": {
    "h": 200.323,
    "s": 65.957,
    "l": 63.137
  },
  "oklch": {
    "l": 0.73748,
    "c": 0.10059,
    "h": 232.7
  },
  "luminance": 0.41028
}

Semantic roles & 50–950 ramp

primary

#63B5DF

secondary

#E5C8B9

accent

#5518CE

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #63B5DF

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

Preview Lab → · Contrast checker → · Palette generator →