#638ECF#638ECF

#638ECF is a light, moderate blue. Relative luminance 0.265; OKLCH L 64.3% C 0.109 H 258.4°. Best body text is #000000 at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#638ECF
RGB	rgb(99, 142, 207)
HSL	hsl(216, 53%, 60%)
HSV	hsv(216, 52%, 81%)
CMYK	cmyk(52.2%, 31.4%, 0%, 18.8%)
CIE-LAB	lab(58.51, 3.73, -37.98)
CIE-LCH	lch(58.51, 38.16, 275.61°)
OKLab	oklab(64.32% -0.0219 -0.1068)
OKLCH	oklch(64.32% 0.109 258.4)
XYZ	xyz(26.0772, 26.5017, 62.7606)
Luminance	0.2650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638ECF #CFA463

analogous

#63C4CF #638ECF #6E63CF

triadic

#638ECF #CF638E #8ECF63

tetradic

#638ECF #CF63C4 #CFA463 #63CF6E

square

#638ECF #CF63C4 #CFA463 #63CF6E

split-complementary

#638ECF #CF6E63 #C4CF63

monochromatic

#2B528C #3A6DBB #638ECF #92B0DD #C1D2EC

Accessibility & contrast

On white

3.33

#638ECF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.30

#638ECF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638ECF

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638ECF	#FFFFFF	#000000	##000000
##638ECF	1.00	3.33	6.30	6.30
#FFFFFF	3.33	1.00	21.00	21.00
#000000	6.30	21.00	1.00	1.00
##000000	6.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7492D2

Deuteranopia (green-blind)

#6788CE

Tritanopia (blue-blind)

#2B9CA5

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #638ecf;
/* rgb */ color: rgb(99, 142, 207);
/* oklch */ color: oklch(64.3% 0.109 258.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#638ecf",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 207
  },
  "hsl": {
    "h": 216.111,
    "s": 52.941,
    "l": 60
  },
  "oklch": {
    "l": 0.64319,
    "c": 0.10907,
    "h": 258.4
  },
  "luminance": 0.26504
}

Semantic roles & 50–950 ramp

primary

#638ECF

secondary

#DCCBB2

accent

#A34BDC

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638ECF

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

Preview Lab → · Contrast checker → · Palette generator →