#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
RGBrgb(99, 142, 207)
HSLhsl(216, 53%, 60%)
HSVhsv(216, 52%, 81%)
CMYKcmyk(52.2%, 31.4%, 0%, 18.8%)
CIE-LABlab(58.51, 3.73, -37.98)
CIE-LCHlch(58.51, 38.16, 275.61°)
OKLaboklab(64.32% -0.0219 -0.1068)
OKLCHoklch(64.32% 0.109 258.4)
XYZxyz(26.0772, 26.5017, 62.7606)
Luminance0.2650 (WCAG relative)
Temperaturecool
Familyblue

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
##638ECF1.003.336.306.30
#FFFFFF3.331.0021.0021.00
#0000006.3021.001.001.00
##0000006.3021.001.001.00

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 →

#638ECF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva