#4037B2#4037B2

#4037B2 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 43.0% C 0.187 H 278.3°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#4037B2
RGB	rgb(64, 55, 178)
HSL	hsl(244, 53%, 46%)
HSV	hsv(244, 69%, 70%)
CMYK	cmyk(64%, 69.1%, 0%, 30.2%)
CIE-LAB	lab(31.89, 40.98, -64.01)
CIE-LCH	lch(31.89, 76.01, 302.63°)
OKLab	oklab(43.02% 0.0271 -0.1847)
OKLCH	oklch(43.02% 0.187 278.3)
XYZ	xyz(11.5138, 7.0358, 42.8621)
Luminance	0.0704 (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

#4037B2 #A9B237

analogous

#376BB2 #4037B2 #7D37B2

triadic

#4037B2 #B24037 #37B240

tetradic

#4037B2 #B2376B #A9B237 #37B27D

square

#4037B2 #B2376B #A9B237 #37B27D

split-complementary

#4037B2 #B27D37 #6BB237

monochromatic

#1E1A54 #2F2983 #4037B2 #625ACC #8F89DB

Accessibility & contrast

On white

8.72

#4037B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#4037B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037B2

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037B2	#FFFFFF	#000000	##FFFFFF
##4037B2	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0046B0

Tritanopia (blue-blind)

#005870

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #4037b2;
/* rgb */ color: rgb(64, 55, 178);
/* oklch */ color: oklch(43.0% 0.187 278.3);

Tailwind

colors: {
  custom: {
    50: '#836fca',
    500: '#4037b2',
    950: '#000000',
  },
}

SCSS

$custom: #4037b2;
$custom-light: #836fca;
$custom-dark: #000000;

JSON

{
  "hex": "#4037b2",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 178
  },
  "hsl": {
    "h": 244.39,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43021,
    "c": 0.18664,
    "h": 278.3
  },
  "luminance": 0.07037
}

Semantic roles & 50–950 ramp

primary

#4037B2

secondary

#C0C580

accent

#DC4CD2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4037B2

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

Preview Lab → · Contrast checker → · Palette generator →