#4037BE#4037BE

#4037BE is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.2% C 0.202 H 277.2°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#4037BE
RGB	rgb(64, 55, 190)
HSL	hsl(244, 55%, 48%)
HSV	hsv(244, 71%, 75%)
CMYK	cmyk(66.3%, 71.1%, 0%, 25.5%)
CIE-LAB	lab(33.00, 44.88, -69.28)
CIE-LCH	lch(33.00, 82.55, 302.93°)
OKLab	oklab(44.16% 0.0252 -0.2001)
OKLCH	oklch(44.16% 0.202 277.2)
XYZ	xyz(12.7718, 7.5390, 49.4873)
Luminance	0.0754 (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

#4037BE #B5BE37

analogous

#3771BE #4037BE #8337BE

triadic

#4037BE #BE4037 #37BE40

tetradic

#4037BE #BE3771 #B5BE37 #37BE83

square

#4037BE #BE3771 #B5BE37 #37BE83

split-complementary

#4037BE #BE8337 #71BE37

monochromatic

#201C5F #30298F #4037BE #6861D1 #9690DF

Accessibility & contrast

On white

8.37

#4037BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#4037BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037BE

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037BE	#FFFFFF	#000000	##FFFFFF
##4037BE	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C2

Deuteranopia (green-blind)

#0048BC

Tritanopia (blue-blind)

#005C77

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4037be;
/* rgb */ color: rgb(64, 55, 190);
/* oklch */ color: oklch(44.2% 0.202 277.2);

Tailwind

colors: {
  custom: {
    50: '#856fd3',
    500: '#4037be',
    950: '#000000',
  },
}

SCSS

$custom: #4037be;
$custom-light: #856fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#4037be",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 190
  },
  "hsl": {
    "h": 244,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.4416,
    "c": 0.20165,
    "h": 277.2
  },
  "luminance": 0.0754
}

Semantic roles & 50–950 ramp

primary

#4037BE

secondary

#C5CA87

accent

#DE49D4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #4037BE

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

Preview Lab → · Contrast checker → · Palette generator →