#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
RGB	rgb(64, 55, 216)
HSL	hsl(243, 67%, 53%)
HSV	hsv(243, 75%, 85%)
CMYK	cmyk(70.4%, 74.5%, 0%, 15.3%)
CIE-LAB	lab(35.55, 53.12, -80.21)
CIE-LCH	lch(35.55, 96.20, 303.51°)
OKLab	oklab(46.74% 0.0203 -0.2319)
OKLCH	oklch(46.74% 0.233 275)
XYZ	xyz(15.8711, 8.7787, 65.8105)
Luminance	0.0878 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.65

Blue With A Hint Of Purple

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
##4037D8	1.00	7.62	2.76	7.62
#FFFFFF	7.62	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.62	1.00	21.00	1.00

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 →