#4370D1#4370D1

#4370D1 is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.4% C 0.158 H 263.5°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX#4370D1
RGBrgb(67, 112, 209)
HSLhsl(221, 61%, 54%)
HSVhsv(221, 68%, 82%)
CMYKcmyk(67.9%, 46.4%, 0%, 18%)
CIE-LABlab(48.74, 16.42, -54.71)
CIE-LCHlch(48.74, 57.12, 286.70°)
OKLaboklab(56.37% -0.0179 -0.1567)
OKLCHoklch(56.37% 0.158 263.5)
XYZxyz(19.6135, 17.3831, 62.6309)
Luminance0.1739 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4370D1 #D1A443
analogous
#43B7D1 #4370D1 #5D43D1
triadic
#4370D1 #D14370 #70D143
tetradic
#4370D1 #D143B7 #D1A443 #43D15D
square
#4370D1 #D143B7 #D1A443 #43D15D
split-complementary
#4370D1 #D15D43 #B7D143
monochromatic
#1E3C7B #2A54AD #4370D1 #7495DD #A5BBE9

Accessibility & contrast

On white

4.69
#4370D1 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.48
#4370D1 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4370D1
4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4370D1#FFFFFF#000000##FFFFFF
##4370D11.004.694.484.69
#FFFFFF4.691.0021.001.00
#0000004.4821.001.0021.00
##FFFFFF4.691.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3E7BD5
Deuteranopia (green-blind)
#206ECF
Tritanopia (blue-blind)
#008796
Achromatopsia (no color)
#747474

Design tokens & code

CSS
--color: #4370d1;
/* rgb */ color: rgb(67, 112, 209);
/* oklch */ color: oklch(56.4% 0.158 263.5);
Tailwind
colors: {
  custom: {
    50: '#8798e0',
    500: '#4370d1',
    950: '#000000',
  },
}
SCSS
$custom: #4370d1;
$custom-light: #8798e0;
$custom-dark: #000000;
JSON
{
  "hex": "#4370d1",
  "rgb": {
    "r": 67,
    "g": 112,
    "b": 209
  },
  "hsl": {
    "h": 220.986,
    "s": 60.684,
    "l": 54.118
  },
  "oklch": {
    "l": 0.56366,
    "c": 0.15769,
    "h": 263.5
  },
  "luminance": 0.17385
}

Semantic roles & 50–950 ramp

primary
#4370D1
secondary
#D6C39A
accent
#B144E4
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0D15
muted
#7D7E83

Preview Lab

Preview with #4370D1

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

Preview Lab → · Contrast checker → · Palette generator →

#4370D1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva