#638DCA#638DCA

#638DCA is a light, moderate blue. Relative luminance 0.260; OKLCH L 63.8% C 0.103 H 257.7°. Best body text is #000000 at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#638DCA
RGB	rgb(99, 141, 202)
HSL	hsl(216, 49%, 59%)
HSV	hsv(216, 51%, 79%)
CMYK	cmyk(51%, 30.2%, 0%, 20.8%)
CIE-LAB	lab(58.00, 2.77, -35.96)
CIE-LCH	lch(58.00, 36.06, 274.41°)
OKLab	oklab(63.85% -0.0221 -0.101)
OKLCH	oklch(63.85% 0.103 257.7)
XYZ	xyz(25.3275, 25.9648, 59.5427)
Luminance	0.2597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638DCA #CAA063

analogous

#63C1CA #638DCA #6D63CA

triadic

#638DCA #CA638D #8DCA63

tetradic

#638DCA #CA63C1 #CAA063 #63CA6D

square

#638DCA #CA63C1 #CAA063 #63CA6D

split-complementary

#638DCA #CA6D63 #C1CA63

monochromatic

#2D5185 #3D6DB3 #638DCA #91AEDA #BED0E9

Accessibility & contrast

On white

3.39

#638DCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.19

#638DCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DCA

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638DCA	#FFFFFF	#000000	##000000
##638DCA	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)

#7591CD

Deuteranopia (green-blind)

#6987C9

Tritanopia (blue-blind)

#319AA3

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #638dca;
/* rgb */ color: rgb(99, 141, 202);
/* oklch */ color: oklch(63.8% 0.103 257.7);

Tailwind

colors: {
  custom: {
    50: '#95aeda',
    500: '#638dca',
    950: '#000000',
  },
}

SCSS

$custom: #638dca;
$custom-light: #95aeda;
$custom-dark: #000000;

JSON

{
  "hex": "#638dca",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 202
  },
  "hsl": {
    "h": 215.534,
    "s": 49.282,
    "l": 59.02
  },
  "oklch": {
    "l": 0.63849,
    "c": 0.10338,
    "h": 257.7
  },
  "luminance": 0.25967
}

Semantic roles & 50–950 ramp

primary

#638DCA

secondary

#D9C8B0

accent

#A14FD9

background

#F9FAFD

surface

#F2F4FA

border

#CCCED3

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638DCA

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

Preview Lab → · Contrast checker → · Palette generator →