#638CD5#638CD5

#638CD5 is a light, moderate blue. Relative luminance 0.262; OKLCH L 64.2% C 0.119 H 261.3°. Best body text is #000000 at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#638CD5
RGB	rgb(99, 140, 213)
HSL	hsl(218, 58%, 61%)
HSV	hsv(218, 54%, 84%)
CMYK	cmyk(53.5%, 34.3%, 0%, 16.5%)
CIE-LAB	lab(58.24, 6.78, -41.78)
CIE-LCH	lch(58.24, 42.32, 279.22°)
OKLab	oklab(64.2% -0.018 -0.1179)
OKLCH	oklch(64.2% 0.119 261.3)
XYZ	xyz(26.5298, 26.2109, 66.5991)
Luminance	0.2621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638CD5 #D5AC63

analogous

#63C5D5 #638CD5 #7363D5

triadic

#638CD5 #D5638C #8CD563

tetradic

#638CD5 #D563C5 #D5AC63 #63D573

square

#638CD5 #D563C5 #D5AC63 #63D573

split-complementary

#638CD5 #D57363 #C5D563

monochromatic

#284F95 #3569C6 #638CD5 #93B0E2 #C3D3EF

Accessibility & contrast

On white

3.36

#638CD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.24

#638CD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638CD5

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638CD5	#FFFFFF	#000000	##000000
##638CD5	1.00	3.36	6.24	6.24
#FFFFFF	3.36	1.00	21.00	21.00
#000000	6.24	21.00	1.00	1.00
##000000	6.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F92D8

Deuteranopia (green-blind)

#6187D3

Tritanopia (blue-blind)

#249CA7

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638cd5;
/* rgb */ color: rgb(99, 140, 213);
/* oklch */ color: oklch(64.2% 0.119 261.3);

Tailwind

colors: {
  custom: {
    50: '#96ade2',
    500: '#638cd5',
    950: '#000000',
  },
}

SCSS

$custom: #638cd5;
$custom-light: #96ade2;
$custom-dark: #000000;

JSON

{
  "hex": "#638cd5",
  "rgb": {
    "r": 99,
    "g": 140,
    "b": 213
  },
  "hsl": {
    "h": 218.421,
    "s": 57.576,
    "l": 61.176
  },
  "oklch": {
    "l": 0.64198,
    "c": 0.11926,
    "h": 261.3
  },
  "luminance": 0.26213
}

Semantic roles & 50–950 ramp

primary

#638CD5

secondary

#DFD0B4

accent

#8A20C5

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638CD5

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

Preview Lab → · Contrast checker → · Palette generator →