#638AF9#638AF9

#638AF9 is a light, vivid blue. Relative luminance 0.277; OKLCH L 65.9% C 0.170 H 267.1°. Best body text is #000000 at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#638AF9
RGB	rgb(99, 138, 249)
HSL	hsl(224, 93%, 68%)
HSV	hsv(224, 60%, 98%)
CMYK	cmyk(60.2%, 44.6%, 0%, 2.4%)
CIE-LAB	lab(59.59, 19.58, -59.64)
CIE-LCH	lch(59.59, 62.77, 288.17°)
OKLab	oklab(65.85% -0.0086 -0.1702)
OKLCH	oklch(65.85% 0.17 267.1)
XYZ	xyz(31.3271, 27.6665, 93.2935)
Luminance	0.2767 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638AF9 #F9D263

analogous

#63D5F9 #638AF9 #8763F9

triadic

#638AF9 #F9638A #8AF963

tetradic

#638AF9 #F963D5 #F9D263 #63F987

square

#638AF9 #F963D5 #F9D263 #63F987

split-complementary

#638AF9 #F98763 #D5F963

monochromatic

#083FD9 #285EF7 #638AF9 #9EB6FB #D9E2FE

Accessibility & contrast

On white

3.21

#638AF9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.53

#638AF9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638AF9

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638AF9	#FFFFFF	#000000	##000000
##638AF9	1.00	3.21	6.53	6.53
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.53	21.00	1.00	1.00
##000000	6.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5697FD

Deuteranopia (green-blind)

#3E89F7

Tritanopia (blue-blind)

#00A3B5

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #638af9;
/* rgb */ color: rgb(99, 138, 249);
/* oklch */ color: oklch(65.9% 0.170 267.1);

Tailwind

colors: {
  custom: {
    50: '#9babfc',
    500: '#638af9',
    950: '#000000',
  },
}

SCSS

$custom: #638af9;
$custom-light: #9babfc;
$custom-dark: #000000;

JSON

{
  "hex": "#638af9",
  "rgb": {
    "r": 99,
    "g": 138,
    "b": 249
  },
  "hsl": {
    "h": 224.4,
    "s": 92.593,
    "l": 68.235
  },
  "oklch": {
    "l": 0.65853,
    "c": 0.17042,
    "h": 267.1
  },
  "luminance": 0.27669
}

Semantic roles & 50–950 ramp

primary

#638AF9

secondary

#F3E7C5

accent

#AA00E6

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638AF9

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

Preview Lab → · Contrast checker → · Palette generator →