#4037BA#4037BA

#4037BA is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.8% C 0.197 H 277.5°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#4037BA
RGB	rgb(64, 55, 186)
HSL	hsl(244, 54%, 47%)
HSV	hsv(244, 70%, 73%)
CMYK	cmyk(65.6%, 70.4%, 0%, 27.1%)
CIE-LAB	lab(32.63, 43.58, -67.54)
CIE-LCH	lch(32.63, 80.38, 302.83°)
OKLab	oklab(43.78% 0.0258 -0.195)
OKLCH	oklch(43.78% 0.197 277.5)
XYZ	xyz(12.3406, 7.3665, 47.2164)
Luminance	0.0737 (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

#4037BA #B1BA37

analogous

#3770BA #4037BA #8137BA

triadic

#4037BA #BA4037 #37BA40

tetradic

#4037BA #BA3770 #B1BA37 #37BA81

square

#4037BA #BA3770 #B1BA37 #37BA81

split-complementary

#4037BA #BA8137 #70BA37

monochromatic

#1F1B5C #30298B #4037BA #665FD0 #938EDE

Accessibility & contrast

On white

8.49

#4037BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#4037BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037BA

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037BA	#FFFFFF	#000000	##FFFFFF
##4037BA	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BE

Deuteranopia (green-blind)

#0047B8

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4037ba;
/* rgb */ color: rgb(64, 55, 186);
/* oklch */ color: oklch(43.8% 0.197 277.5);

Tailwind

colors: {
  custom: {
    50: '#846fd0',
    500: '#4037ba',
    950: '#000000',
  },
}

SCSS

$custom: #4037ba;
$custom-light: #846fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#4037ba",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 186
  },
  "hsl": {
    "h": 244.122,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43776,
    "c": 0.19669,
    "h": 277.5
  },
  "luminance": 0.07368
}

Semantic roles & 50–950 ramp

primary

#4037BA

secondary

#C3C885

accent

#DE4AD4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #4037BA

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

Preview Lab → · Contrast checker → · Palette generator →