#637DE2#637DE2

#637DE2 is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.8% C 0.155 H 270.5°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#637DE2
RGB	rgb(99, 125, 226)
HSL	hsl(228, 69%, 64%)
HSV	hsv(228, 56%, 89%)
CMYK	cmyk(56.2%, 44.7%, 0%, 11.4%)
CIE-LAB	lab(54.88, 19.92, -54.40)
CIE-LCH	lch(54.88, 57.93, 290.11°)
OKLab	oklab(61.83% 0.0013 -0.1549)
OKLCH	oklch(61.83% 0.155 270.5)
XYZ	xyz(26.2021, 22.8089, 74.9586)
Luminance	0.2281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637DE2 #E2C863

analogous

#63BCE2 #637DE2 #8863E2

triadic

#637DE2 #E2637D #7DE263

tetradic

#637DE2 #E263BC #E2C863 #63E288

square

#637DE2 #E263BC #E2C863 #63E288

split-complementary

#637DE2 #E28863 #BCE263

monochromatic

#203CAB #2F52D8 #637DE2 #97A8EC #CAD3F5

Accessibility & contrast

On white

3.78

#637DE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#637DE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637DE2

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637DE2	#FFFFFF	#000000	##000000
##637DE2	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F89E6

Deuteranopia (green-blind)

#3F7EE0

Tritanopia (blue-blind)

#0F93A4

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #637de2;
/* rgb */ color: rgb(99, 125, 226);
/* oklch */ color: oklch(61.8% 0.155 270.5);

Tailwind

colors: {
  custom: {
    50: '#98a2ec',
    500: '#637de2',
    950: '#000000',
  },
}

SCSS

$custom: #637de2;
$custom-light: #98a2ec;
$custom-dark: #000000;

JSON

{
  "hex": "#637de2",
  "rgb": {
    "r": 99,
    "g": 125,
    "b": 226
  },
  "hsl": {
    "h": 227.717,
    "s": 68.649,
    "l": 63.725
  },
  "oklch": {
    "l": 0.61827,
    "c": 0.15496,
    "h": 270.5
  },
  "luminance": 0.22811
}

Semantic roles & 50–950 ramp

primary

#637DE2

secondary

#E7DEBA

accent

#AA15D1

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0F16

muted

#7E7E84

Preview Lab

Preview with #637DE2

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

Preview Lab → · Contrast checker → · Palette generator →