#638BD8#638BD8

#638BD8 is a light, vivid blue. Relative luminance 0.261; OKLCH L 64.1% C 0.124 H 262.6°. Best body text is #000000 at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#638BD8
RGB	rgb(99, 139, 216)
HSL	hsl(219, 60%, 62%)
HSV	hsv(219, 54%, 85%)
CMYK	cmyk(54.2%, 35.6%, 0%, 15.3%)
CIE-LAB	lab(58.11, 8.32, -43.66)
CIE-LCH	lch(58.11, 44.45, 280.78°)
OKLab	oklab(64.15% -0.0161 -0.1234)
OKLCH	oklch(64.15% 0.124 262.6)
XYZ	xyz(26.7687, 26.0737, 68.5746)
Luminance	0.2608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638BD8 #D8B063

analogous

#63C6D8 #638BD8 #7663D8

triadic

#638BD8 #D8638B #8BD863

tetradic

#638BD8 #D863C6 #D8B063 #63D876

square

#638BD8 #D863C6 #D8B063 #63D876

split-complementary

#638BD8 #D87663 #C6D863

monochromatic

#274E9A #3367CB #638BD8 #94AFE4 #C5D4F0

Accessibility & contrast

On white

3.38

#638BD8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.22

#638BD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638BD8

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638BD8	#FFFFFF	#000000	##000000
##638BD8	1.00	3.38	6.22	6.22
#FFFFFF	3.38	1.00	21.00	21.00
#000000	6.22	21.00	1.00	1.00
##000000	6.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C92DB

Deuteranopia (green-blind)

#5E87D6

Tritanopia (blue-blind)

#209CA7

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638bd8;
/* rgb */ color: rgb(99, 139, 216);
/* oklch */ color: oklch(64.1% 0.124 262.6);

Tailwind

colors: {
  custom: {
    50: '#97ace4',
    500: '#638bd8',
    950: '#000000',
  },
}

SCSS

$custom: #638bd8;
$custom-light: #97ace4;
$custom-dark: #000000;

JSON

{
  "hex": "#638bd8",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 216
  },
  "hsl": {
    "h": 219.487,
    "s": 60,
    "l": 61.765
  },
  "oklch": {
    "l": 0.64145,
    "c": 0.12445,
    "h": 262.6
  },
  "luminance": 0.26076
}

Semantic roles & 50–950 ramp

primary

#638BD8

secondary

#E1D2B6

accent

#8E1EC8

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1015

muted

#7E7F84

Preview Lab

Preview with #638BD8

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

Preview Lab → · Contrast checker → · Palette generator →