#638DCF#638DCF

#638DCF is a light, moderate blue. Relative luminance 0.262; OKLCH L 64.1% C 0.110 H 259.2°. Best body text is #000000 at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#638DCF
RGB	rgb(99, 141, 207)
HSL	hsl(217, 53%, 60%)
HSV	hsv(217, 52%, 81%)
CMYK	cmyk(52.2%, 31.9%, 0%, 18.8%)
CIE-LAB	lab(58.23, 4.32, -38.42)
CIE-LCH	lch(58.23, 38.66, 276.41°)
OKLab	oklab(64.1% -0.0207 -0.1081)
OKLCH	oklch(64.1% 0.11 259.2)
XYZ	xyz(25.9291, 26.2055, 62.7112)
Luminance	0.2621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638DCF #CFA563

analogous

#63C3CF #638DCF #6F63CF

triadic

#638DCF #CF638D #8DCF63

tetradic

#638DCF #CF63C3 #CFA563 #63CF6F

square

#638DCF #CF63C3 #CFA563 #63CF6F

split-complementary

#638DCF #CF6F63 #C3CF63

monochromatic

#2B518C #3A6CBB #638DCF #92AFDD #C1D1EC

Accessibility & contrast

On white

3.36

#638DCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.24

#638DCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DCF

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638DCF	#FFFFFF	#000000	##000000
##638DCF	1.00	3.36	6.24	6.24
#FFFFFF	3.36	1.00	21.00	21.00
#000000	6.24	21.00	1.00	1.00
##000000	6.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7392D2

Deuteranopia (green-blind)

#6687CE

Tritanopia (blue-blind)

#2B9CA5

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638dcf;
/* rgb */ color: rgb(99, 141, 207);
/* oklch */ color: oklch(64.1% 0.110 259.2);

Tailwind

colors: {
  custom: {
    50: '#96aede',
    500: '#638dcf',
    950: '#000000',
  },
}

SCSS

$custom: #638dcf;
$custom-light: #96aede;
$custom-dark: #000000;

JSON

{
  "hex": "#638dcf",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 207
  },
  "hsl": {
    "h": 216.667,
    "s": 52.941,
    "l": 60
  },
  "oklch": {
    "l": 0.64101,
    "c": 0.11009,
    "h": 259.2
  },
  "luminance": 0.26207
}

Semantic roles & 50–950 ramp

primary

#638DCF

secondary

#DCCCB2

accent

#A44BDC

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638DCF

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

Preview Lab → · Contrast checker → · Palette generator →