#4037CB#4037CB

#4037CB is a mid, highly saturated blue. Relative luminance 0.081; OKLCH L 45.4% C 0.217 H 276.0°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).

Color values

HEX	#4037CB
RGB	rgb(64, 55, 203)
HSL	hsl(244, 59%, 51%)
HSV	hsv(244, 73%, 80%)
CMYK	cmyk(68.5%, 72.9%, 0%, 20.4%)
CIE-LAB	lab(34.26, 49.03, -74.83)
CIE-LCH	lch(34.26, 89.46, 303.24°)
OKLab	oklab(45.43% 0.0228 -0.2162)
OKLCH	oklch(45.43% 0.217 276)
XYZ	xyz(14.2565, 8.1329, 57.3068)
Luminance	0.0813 (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

#4037CB #C2CB37

analogous

#3778CB #4037CB #8A37CB

triadic

#4037CB #CB4037 #37CB40

tetradic

#4037CB #CB3778 #C2CB37 #37CB8A

square

#4037CB #CB3778 #C2CB37 #37CB8A

split-complementary

#4037CB #CB8A37 #78CB37

monochromatic

#211C6C #30299C #4037CB #6E68D8 #9D98E4

Accessibility & contrast

On white

7.99

#4037CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#4037CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037CB

7.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037CB	#FFFFFF	#000000	##FFFFFF
##4037CB	1.00	7.99	2.63	7.99
#FFFFFF	7.99	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CF

Deuteranopia (green-blind)

#004AC8

Tritanopia (blue-blind)

#00617E

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4037cb;
/* rgb */ color: rgb(64, 55, 203);
/* oklch */ color: oklch(45.4% 0.217 276.0);

Tailwind

colors: {
  custom: {
    50: '#8870dc',
    500: '#4037cb',
    950: '#000000',
  },
}

SCSS

$custom: #4037cb;
$custom-light: #8870dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4037cb",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 203
  },
  "hsl": {
    "h": 243.649,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.45431,
    "c": 0.21745,
    "h": 276
  },
  "luminance": 0.08134
}

Semantic roles & 50–950 ramp

primary

#4037CB

secondary

#CCD08E

accent

#E246D8

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4037CB

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

Preview Lab → · Contrast checker → · Palette generator →