#638EDD#638EDD

#638EDD is a light, vivid blue. Relative luminance 0.272; OKLCH L 65.1% C 0.128 H 261.8°. Best body text is #000000 at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#638EDD
RGB	rgb(99, 142, 221)
HSL	hsl(219, 64%, 63%)
HSV	hsv(219, 55%, 87%)
CMYK	cmyk(55.2%, 35.7%, 0%, 13.3%)
CIE-LAB	lab(59.17, 8.13, -44.77)
CIE-LCH	lch(59.17, 45.51, 280.29°)
OKLab	oklab(65.05% -0.0183 -0.1266)
OKLCH	oklch(65.05% 0.128 261.8)
XYZ	xyz(27.8653, 27.2169, 72.1776)
Luminance	0.2722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638EDD #DDB263

analogous

#63CBDD #638EDD #7563DD

triadic

#638EDD #DD638E #8EDD63

tetradic

#638EDD #DD63CB #DDB263 #63DD75

square

#638EDD #DD63CB #DDB263 #63DD75

split-complementary

#638EDD #DD7563 #CBDD63

monochromatic

#2350A2 #316AD2 #638EDD #95B2E8 #C7D7F3

Accessibility & contrast

On white

3.26

#638EDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.44

#638EDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638EDD

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638EDD	#FFFFFF	#000000	##000000
##638EDD	1.00	3.26	6.44	6.44
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.44	21.00	1.00	1.00
##000000	6.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E95E0

Deuteranopia (green-blind)

#5F89DB

Tritanopia (blue-blind)

#139FAB

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #638edd;
/* rgb */ color: rgb(99, 142, 221);
/* oklch */ color: oklch(65.1% 0.128 261.8);

Tailwind

colors: {
  custom: {
    50: '#97aee8',
    500: '#638edd',
    950: '#000000',
  },
}

SCSS

$custom: #638edd;
$custom-light: #97aee8;
$custom-dark: #000000;

JSON

{
  "hex": "#638edd",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 221
  },
  "hsl": {
    "h": 218.852,
    "s": 64.211,
    "l": 62.745
  },
  "oklch": {
    "l": 0.65054,
    "c": 0.12792,
    "h": 261.8
  },
  "luminance": 0.27219
}

Semantic roles & 50–950 ramp

primary

#638EDD

secondary

#E4D4B8

accent

#8D19CC

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #638EDD

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

Preview Lab → · Contrast checker → · Palette generator →