#638FD2#638FD2

#638FD2 is a light, moderate blue. Relative luminance 0.270; OKLCH L 64.7% C 0.112 H 258.6°. Best body text is #000000 at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#638FD2
RGB	rgb(99, 143, 210)
HSL	hsl(216, 55%, 61%)
HSV	hsv(216, 53%, 82%)
CMYK	cmyk(52.9%, 31.9%, 0%, 17.6%)
CIE-LAB	lab(58.93, 4.08, -39.01)
CIE-LCH	lch(58.93, 39.22, 275.97°)
OKLab	oklab(64.69% -0.0222 -0.1098)
OKLCH	oklch(64.69% 0.112 258.6)
XYZ	xyz(26.5969, 26.9487, 64.7603)
Luminance	0.2695 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638FD2 #D2A663

analogous

#63C7D2 #638FD2 #6E63D2

triadic

#638FD2 #D2638F #8FD263

tetradic

#638FD2 #D263C7 #D2A663 #63D26E

square

#638FD2 #D263C7 #D2A663 #63D26E

split-complementary

#638FD2 #D26E63 #C7D263

monochromatic

#2A5391 #376EC0 #638FD2 #92B1E0 #C2D3ED

Accessibility & contrast

On white

3.29

#638FD2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.39

#638FD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638FD2

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638FD2	#FFFFFF	#000000	##000000
##638FD2	1.00	3.29	6.39	6.39
#FFFFFF	3.29	1.00	21.00	21.00
#000000	6.39	21.00	1.00	1.00
##000000	6.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7494D5

Deuteranopia (green-blind)

#6789D1

Tritanopia (blue-blind)

#279EA7

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #638fd2;
/* rgb */ color: rgb(99, 143, 210);
/* oklch */ color: oklch(64.7% 0.112 258.6);

Tailwind

colors: {
  custom: {
    50: '#96afe0',
    500: '#638fd2',
    950: '#000000',
  },
}

SCSS

$custom: #638fd2;
$custom-light: #96afe0;
$custom-dark: #000000;

JSON

{
  "hex": "#638fd2",
  "rgb": {
    "r": 99,
    "g": 143,
    "b": 210
  },
  "hsl": {
    "h": 216.216,
    "s": 55.224,
    "l": 60.588
  },
  "oklch": {
    "l": 0.64689,
    "c": 0.11206,
    "h": 258.6
  },
  "luminance": 0.26951
}

Semantic roles & 50–950 ramp

primary

#638FD2

secondary

#DECDB3

accent

#8323C3

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638FD2

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

Preview Lab → · Contrast checker → · Palette generator →