#638BD6#638BD6

#638BD6 is a light, vivid blue. Relative luminance 0.260; OKLCH L 64.0% C 0.122 H 262.2°. Best body text is #000000 at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#638BD6
RGB	rgb(99, 139, 214)
HSL	hsl(219, 58%, 61%)
HSV	hsv(219, 54%, 84%)
CMYK	cmyk(53.7%, 35%, 0%, 16.1%)
CIE-LAB	lab(58.01, 7.68, -42.70)
CIE-LCH	lch(58.01, 43.38, 280.20°)
OKLab	oklab(64.04% -0.0166 -0.1206)
OKLCH	oklch(64.04% 0.122 262.2)
XYZ	xyz(26.5117, 25.9709, 67.2211)
Luminance	0.2597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638BD6 #D6AE63

analogous

#63C5D6 #638BD6 #7563D6

triadic

#638BD6 #D6638B #8BD663

tetradic

#638BD6 #D663C5 #D6AE63 #63D675

square

#638BD6 #D663C5 #D6AE63 #63D675

split-complementary

#638BD6 #D67563 #C5D663

monochromatic

#284E97 #3468C7 #638BD6 #93AFE3 #C4D3EF

Accessibility & contrast

On white

3.39

#638BD6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.19

#638BD6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638BD6

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638BD6	#FFFFFF	#000000	##000000
##638BD6	1.00	3.39	6.19	6.19
#FFFFFF	3.39	1.00	21.00	21.00
#000000	6.19	21.00	1.00	1.00
##000000	6.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D91D9

Deuteranopia (green-blind)

#5F87D4

Tritanopia (blue-blind)

#239BA6

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #638bd6;
/* rgb */ color: rgb(99, 139, 214);
/* oklch */ color: oklch(64.0% 0.122 262.2);

Tailwind

colors: {
  custom: {
    50: '#97ace3',
    500: '#638bd6',
    950: '#000000',
  },
}

SCSS

$custom: #638bd6;
$custom-light: #97ace3;
$custom-dark: #000000;

JSON

{
  "hex": "#638bd6",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 214
  },
  "hsl": {
    "h": 219.13,
    "s": 58.376,
    "l": 61.373
  },
  "oklch": {
    "l": 0.64037,
    "c": 0.12172,
    "h": 262.2
  },
  "luminance": 0.25973
}

Semantic roles & 50–950 ramp

primary

#638BD6

secondary

#E0D1B5

accent

#8C20C6

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638BD6

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

Preview Lab → · Contrast checker → · Palette generator →