#638CD2#638CD2

#638CD2 is a light, moderate blue. Relative luminance 0.261; OKLCH L 64.0% C 0.115 H 260.6°. Best body text is #000000 at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#638CD2
RGB	rgb(99, 140, 210)
HSL	hsl(218, 55%, 61%)
HSV	hsv(218, 53%, 82%)
CMYK	cmyk(52.9%, 33.3%, 0%, 17.6%)
CIE-LAB	lab(58.09, 5.84, -40.32)
CIE-LCH	lch(58.09, 40.74, 278.24°)
OKLab	oklab(64.04% -0.0188 -0.1136)
OKLCH	oklch(64.04% 0.115 260.6)
XYZ	xyz(26.1526, 26.0600, 64.6122)
Luminance	0.2606 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638CD2 #D2A963

analogous

#63C3D2 #638CD2 #7163D2

triadic

#638CD2 #D2638C #8CD263

tetradic

#638CD2 #D263C3 #D2A963 #63D271

square

#638CD2 #D263C3 #D2A963 #63D271

split-complementary

#638CD2 #D27163 #C3D263

monochromatic

#2A5091 #376AC0 #638CD2 #92AFE0 #C2D2ED

Accessibility & contrast

On white

3.38

#638CD2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.21

#638CD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638CD2

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638CD2	#FFFFFF	#000000	##000000
##638CD2	1.00	3.38	6.21	6.21
#FFFFFF	3.38	1.00	21.00	21.00
#000000	6.21	21.00	1.00	1.00
##000000	6.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7091D5

Deuteranopia (green-blind)

#6387D1

Tritanopia (blue-blind)

#289BA5

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638cd2;
/* rgb */ color: rgb(99, 140, 210);
/* oklch */ color: oklch(64.0% 0.115 260.6);

Tailwind

colors: {
  custom: {
    50: '#96ade0',
    500: '#638cd2',
    950: '#000000',
  },
}

SCSS

$custom: #638cd2;
$custom-light: #96ade0;
$custom-dark: #000000;

JSON

{
  "hex": "#638cd2",
  "rgb": {
    "r": 99,
    "g": 140,
    "b": 210
  },
  "hsl": {
    "h": 217.838,
    "s": 55.224,
    "l": 60.588
  },
  "oklch": {
    "l": 0.6404,
    "c": 0.11519,
    "h": 260.6
  },
  "luminance": 0.26062
}

Semantic roles & 50–950 ramp

primary

#638CD2

secondary

#DECEB3

accent

#8823C3

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638CD2

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

Preview Lab → · Contrast checker → · Palette generator →