#4037D8#4037D8

#4037D8 is a mid, highly saturated blue. Relative luminance 0.088; OKLCH L 46.7% C 0.233 H 275.0°. Best body text is #FFFFFF at 7.62:1 contrast (WCAG AA passes).

Color values

HEX#4037D8
RGBrgb(64, 55, 216)
HSLhsl(243, 67%, 53%)
HSVhsv(243, 75%, 85%)
CMYKcmyk(70.4%, 74.5%, 0%, 15.3%)
CIE-LABlab(35.55, 53.12, -80.21)
CIE-LCHlch(35.55, 96.20, 303.51°)
OKLaboklab(46.74% 0.0203 -0.2319)
OKLCHoklch(46.74% 0.233 275)
XYZxyz(15.8711, 8.7787, 65.8105)
Luminance0.0878 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4037D8 #CFD837
analogous
#377ED8 #4037D8 #9037D8
triadic
#4037D8 #D84037 #37D840
tetradic
#4037D8 #D8377E #CFD837 #37D890
square
#4037D8 #D8377E #CFD837 #37D890
split-complementary
#4037D8 #D89037 #7ED837
monochromatic
#1E187C #2A22B0 #4037D8 #716AE2 #A29DEC

Accessibility & contrast

On white

7.62
#4037D8 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.76
#4037D8 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037D8
7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4037D8#FFFFFF#000000##FFFFFF
##4037D81.007.622.767.62
#FFFFFF7.621.0021.001.00
#0000002.7621.001.0021.00
##FFFFFF7.621.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005BDD
Deuteranopia (green-blind)
#004CD5
Tritanopia (blue-blind)
#006685
Achromatopsia (no color)
#545454

Design tokens & code

CSS
--color: #4037d8;
/* rgb */ color: rgb(64, 55, 216);
/* oklch */ color: oklch(46.7% 0.233 275.0);
Tailwind
colors: {
  custom: {
    50: '#8a70e5',
    500: '#4037d8',
    950: '#000000',
  },
}
SCSS
$custom: #4037d8;
$custom-light: #8a70e5;
$custom-dark: #000000;
JSON
{
  "hex": "#4037d8",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 216
  },
  "hsl": {
    "h": 243.354,
    "s": 67.364,
    "l": 53.137
  },
  "oklch": {
    "l": 0.46737,
    "c": 0.23283,
    "h": 275
  },
  "luminance": 0.0878
}

Semantic roles & 50–950 ramp

primary
#4037D8
secondary
#D4D893
accent
#EA3EE1
background
#F9F6FE
surface
#F2ECFC
border
#CCC7D5
text
#0E0816
muted
#7E7B84

Preview Lab

Preview with #4037D8

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

Preview Lab → · Contrast checker → · Palette generator →

#4037D8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva