#638CD8#638CD8

#638CD8 is a light, vivid blue. Relative luminance 0.264; OKLCH L 64.4% C 0.123 H 262.0°. Best body text is #000000 at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#638CD8
RGB	rgb(99, 140, 216)
HSL	hsl(219, 60%, 62%)
HSV	hsv(219, 54%, 85%)
CMYK	cmyk(54.2%, 35.2%, 0%, 15.3%)
CIE-LAB	lab(58.38, 7.72, -43.23)
CIE-LCH	lch(58.38, 43.92, 280.13°)
OKLab	oklab(64.36% -0.0173 -0.1221)
OKLCH	oklch(64.36% 0.123 262)
XYZ	xyz(26.9141, 26.3646, 68.6230)
Luminance	0.2637 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638CD8 #D8AF63

analogous

#63C7D8 #638CD8 #7563D8

triadic

#638CD8 #D8638C #8CD863

tetradic

#638CD8 #D863C7 #D8AF63 #63D875

square

#638CD8 #D863C7 #D8AF63 #63D875

split-complementary

#638CD8 #D87563 #C7D863

monochromatic

#274F9A #3368CB #638CD8 #94B0E4 #C5D4F0

Accessibility & contrast

On white

3.35

#638CD8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.27

#638CD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638CD8

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638CD8	#FFFFFF	#000000	##000000
##638CD8	1.00	3.35	6.27	6.27
#FFFFFF	3.35	1.00	21.00	21.00
#000000	6.27	21.00	1.00	1.00
##000000	6.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D92DB

Deuteranopia (green-blind)

#5F87D6

Tritanopia (blue-blind)

#1F9DA8

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638cd8;
/* rgb */ color: rgb(99, 140, 216);
/* oklch */ color: oklch(64.4% 0.123 262.0);

Tailwind

colors: {
  custom: {
    50: '#97ade4',
    500: '#638cd8',
    950: '#000000',
  },
}

SCSS

$custom: #638cd8;
$custom-light: #97ade4;
$custom-dark: #000000;

JSON

{
  "hex": "#638cd8",
  "rgb": {
    "r": 99,
    "g": 140,
    "b": 216
  },
  "hsl": {
    "h": 218.974,
    "s": 60,
    "l": 61.765
  },
  "oklch": {
    "l": 0.64358,
    "c": 0.12334,
    "h": 262
  },
  "luminance": 0.26367
}

Semantic roles & 50–950 ramp

primary

#638CD8

secondary

#E1D2B6

accent

#8C1EC8

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1015

muted

#7E7F84

Preview Lab

Preview with #638CD8

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

Preview Lab → · Contrast checker → · Palette generator →