#4037AD#4037AD

#4037AD is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.6% C 0.180 H 278.9°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#4037AD
RGB	rgb(64, 55, 173)
HSL	hsl(245, 52%, 45%)
HSV	hsv(245, 68%, 68%)
CMYK	cmyk(63%, 68.2%, 0%, 32.2%)
CIE-LAB	lab(31.44, 39.35, -61.77)
CIE-LCH	lch(31.44, 73.24, 302.50°)
OKLab	oklab(42.56% 0.0278 -0.1781)
OKLCH	oklch(42.56% 0.18 278.9)
XYZ	xyz(11.0210, 6.8386, 40.2663)
Luminance	0.0684 (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

#4037AD #A4AD37

analogous

#3769AD #4037AD #7B37AD

triadic

#4037AD #AD4037 #37AD40

tetradic

#4037AD #AD3769 #A4AD37 #37AD7B

square

#4037AD #AD3769 #A4AD37 #37AD7B

split-complementary

#4037AD #AD7B37 #69AD37

monochromatic

#1E1950 #2F287F #4037AD #6057CA #8C86D8

Accessibility & contrast

On white

8.87

#4037AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#4037AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037AD

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037AD	#FFFFFF	#000000	##FFFFFF
##4037AD	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB1

Deuteranopia (green-blind)

#0045AB

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #4037ad;
/* rgb */ color: rgb(64, 55, 173);
/* oklch */ color: oklch(42.6% 0.180 278.9);

Tailwind

colors: {
  custom: {
    50: '#826fc6',
    500: '#4037ad',
    950: '#000000',
  },
}

SCSS

$custom: #4037ad;
$custom-light: #826fc6;
$custom-dark: #000000;

JSON

{
  "hex": "#4037ad",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 173
  },
  "hsl": {
    "h": 244.576,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42557,
    "c": 0.18025,
    "h": 278.9
  },
  "luminance": 0.06839
}

Semantic roles & 50–950 ramp

primary

#4037AD

secondary

#BDC27D

accent

#DB4DD0

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4037AD

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

Preview Lab → · Contrast checker → · Palette generator →