#4370CF#4370CF

#4370CF is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.2% C 0.155 H 263.2°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX#4370CF
RGBrgb(67, 112, 207)
HSLhsl(221, 59%, 54%)
HSVhsv(221, 68%, 81%)
CMYKcmyk(67.6%, 45.9%, 0%, 18.8%)
CIE-LABlab(48.62, 15.71, -53.77)
CIE-LCHlch(48.62, 56.01, 286.28°)
OKLaboklab(56.23% -0.0183 -0.1539)
OKLCHoklch(56.23% 0.155 263.2)
XYZxyz(19.3674, 17.2847, 61.3350)
Luminance0.1729 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4370CF #CFA243
analogous
#43B6CF #4370CF #5C43CF
triadic
#4370CF #CF4370 #70CF43
tetradic
#4370CF #CF43B6 #CFA243 #43CF5C
square
#4370CF #CF43B6 #CFA243 #43CF5C
split-complementary
#4370CF #CF5C43 #B6CF43
monochromatic
#1F3C79 #2B54AA #4370CF #7495DB #A5BAE8

Accessibility & contrast

On white

4.71
#4370CF on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.46
#4370CF on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4370CF
4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4370CF#FFFFFF#000000##FFFFFF
##4370CF1.004.714.464.71
#FFFFFF4.711.0021.001.00
#0000004.4621.001.0021.00
##FFFFFF4.711.0021.001.00

Color blindness preview

Protanopia (red-blind)
#407AD3
Deuteranopia (green-blind)
#246DCD
Tritanopia (blue-blind)
#008695
Achromatopsia (no color)
#737373

Design tokens & code

CSS
--color: #4370cf;
/* rgb */ color: rgb(67, 112, 207);
/* oklch */ color: oklch(56.2% 0.155 263.2);
Tailwind
colors: {
  custom: {
    50: '#8698de',
    500: '#4370cf',
    950: '#000000',
  },
}
SCSS
$custom: #4370cf;
$custom-light: #8698de;
$custom-dark: #000000;
JSON
{
  "hex": "#4370cf",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 207
  },
  "hsl": {
    "h": 220.714,
    "s": 59.322,
    "l": 53.725
  },
  "oklch": {
    "l": 0.56233,
    "c": 0.15497,
    "h": 263.2
  },
  "luminance": 0.17287
}

Semantic roles & 50–950 ramp

primary
#4370CF
secondary
#D5C299
accent
#B045E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0D15
muted
#7D7E83

Preview Lab

Preview with #4370CF

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

Preview Lab → · Contrast checker → · Palette generator →

#4370CF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva