#638AFA#638AFA

#638AFA is a light, vivid blue. Relative luminance 0.277; OKLCH L 65.9% C 0.172 H 267.2°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#638AFA
RGB	rgb(99, 138, 250)
HSL	hsl(225, 94%, 68%)
HSV	hsv(225, 60%, 98%)
CMYK	cmyk(60.4%, 44.8%, 0%, 2%)
CIE-LAB	lab(59.64, 19.91, -60.10)
CIE-LCH	lch(59.64, 63.31, 288.33°)
OKLab	oklab(65.92% -0.0085 -0.1715)
OKLCH	oklch(65.92% 0.172 267.2)
XYZ	xyz(31.4835, 27.7290, 94.1171)
Luminance	0.2773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638AFA #FAD363

analogous

#63D6FA #638AFA #8763FA

triadic

#638AFA #FA638A #8AFA63

tetradic

#638AFA #FA63D6 #FAD363 #63FA87

square

#638AFA #FA63D6 #FAD363 #63FA87

split-complementary

#638AFA #FA8763 #D6FA63

monochromatic

#073EDC #285EF8 #638AFA #9EB6FC #DAE3FE

Accessibility & contrast

On white

3.21

#638AFA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#638AFA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638AFA

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638AFA	#FFFFFF	#000000	##000000
##638AFA	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5597FE

Deuteranopia (green-blind)

#3D89F8

Tritanopia (blue-blind)

#00A3B6

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #638afa;
/* rgb */ color: rgb(99, 138, 250);
/* oklch */ color: oklch(65.9% 0.172 267.2);

Tailwind

colors: {
  custom: {
    50: '#9cabfc',
    500: '#638afa',
    950: '#000000',
  },
}

SCSS

$custom: #638afa;
$custom-light: #9cabfc;
$custom-dark: #000000;

JSON

{
  "hex": "#638afa",
  "rgb": {
    "r": 99,
    "g": 138,
    "b": 250
  },
  "hsl": {
    "h": 224.503,
    "s": 93.789,
    "l": 68.431
  },
  "oklch": {
    "l": 0.65915,
    "c": 0.17175,
    "h": 267.2
  },
  "luminance": 0.27732
}

Semantic roles & 50–950 ramp

primary

#638AFA

secondary

#F3E7C6

accent

#AA00E6

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1018

muted

#7F7F86

Preview Lab

Preview with #638AFA

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

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