#638ECC#638ECC

#638ECC is a light, moderate blue. Relative luminance 0.264; OKLCH L 64.2% C 0.105 H 257.5°. Best body text is #000000 at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#638ECC
RGB	rgb(99, 142, 204)
HSL	hsl(215, 51%, 59%)
HSV	hsv(215, 51%, 80%)
CMYK	cmyk(51.5%, 30.4%, 0%, 20%)
CIE-LAB	lab(58.37, 2.80, -36.51)
CIE-LCH	lch(58.37, 36.61, 274.39°)
OKLab	oklab(64.17% -0.0227 -0.1026)
OKLCH	oklch(64.17% 0.105 257.5)
XYZ	xyz(25.7140, 26.3564, 60.8473)
Luminance	0.2636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638ECC #CCA163

analogous

#63C2CC #638ECC #6D63CC

triadic

#638ECC #CC638E #8ECC63

tetradic

#638ECC #CC63C2 #CCA163 #63CC6D

square

#638ECC #CC63C2 #CCA163 #63CC6D

split-complementary

#638ECC #CC6D63 #C2CC63

monochromatic

#2C5288 #3C6EB6 #638ECC #91AFDB #BFD1EA

Accessibility & contrast

On white

3.35

#638ECC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.27

#638ECC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638ECC

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638ECC	#FFFFFF	#000000	##000000
##638ECC	1.00	3.35	6.27	6.27
#FFFFFF	3.35	1.00	21.00	21.00
#000000	6.27	21.00	1.00	1.00
##000000	6.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7692CF

Deuteranopia (green-blind)

#6988CB

Tritanopia (blue-blind)

#2F9CA4

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638ecc;
/* rgb */ color: rgb(99, 142, 204);
/* oklch */ color: oklch(64.2% 0.105 257.5);

Tailwind

colors: {
  custom: {
    50: '#95aedc',
    500: '#638ecc',
    950: '#000000',
  },
}

SCSS

$custom: #638ecc;
$custom-light: #95aedc;
$custom-dark: #000000;

JSON

{
  "hex": "#638ecc",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 204
  },
  "hsl": {
    "h": 215.429,
    "s": 50.725,
    "l": 59.412
  },
  "oklch": {
    "l": 0.64167,
    "c": 0.10507,
    "h": 257.5
  },
  "luminance": 0.26358
}

Semantic roles & 50–950 ramp

primary

#638ECC

secondary

#DAC9B1

accent

#A14EDA

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638ECC

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

Preview Lab → · Contrast checker → · Palette generator →