#4037C9#4037C9

#4037C9 is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.2% C 0.215 H 276.2°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#4037C9
RGB	rgb(64, 55, 201)
HSL	hsl(244, 57%, 50%)
HSV	hsv(244, 73%, 79%)
CMYK	cmyk(68.2%, 72.6%, 0%, 21.2%)
CIE-LAB	lab(34.06, 48.40, -73.98)
CIE-LCH	lch(34.06, 88.41, 303.19°)
OKLab	oklab(45.23% 0.0232 -0.2138)
OKLCH	oklch(45.23% 0.215 276.2)
XYZ	xyz(14.0197, 8.0381, 56.0597)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4037C9 #C0C937

analogous

#3777C9 #4037C9 #8937C9

triadic

#4037C9 #C94037 #37C940

tetradic

#4037C9 #C93777 #C0C937 #37C989

square

#4037C9 #C93777 #C0C937 #37C989

split-complementary

#4037C9 #C98937 #77C937

monochromatic

#211C69 #302999 #4037C9 #6E67D6 #9C97E3

Accessibility & contrast

On white

8.05

#4037C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#4037C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037C9

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037C9	#FFFFFF	#000000	##FFFFFF
##4037C9	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CD

Deuteranopia (green-blind)

#004AC6

Tritanopia (blue-blind)

#00607D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #4037c9;
/* rgb */ color: rgb(64, 55, 201);
/* oklch */ color: oklch(45.2% 0.215 276.2);

Tailwind

colors: {
  custom: {
    50: '#8770db',
    500: '#4037c9',
    950: '#000000',
  },
}

SCSS

$custom: #4037c9;
$custom-light: #8770db;
$custom-dark: #000000;

JSON

{
  "hex": "#4037c9",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 201
  },
  "hsl": {
    "h": 243.699,
    "s": 57.48,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45233,
    "c": 0.21505,
    "h": 276.2
  },
  "luminance": 0.08039
}

Semantic roles & 50–950 ramp

primary

#4037C9

secondary

#CBCF8D

accent

#E147D7

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #4037C9

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

Preview Lab → · Contrast checker → · Palette generator →