#4037DA#4037DA

#4037DA is a mid, highly saturated blue. Relative luminance 0.089; OKLCH L 46.9% C 0.235 H 274.8°. Best body text is #FFFFFF at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#4037DA
RGB	rgb(64, 55, 218)
HSL	hsl(243, 69%, 54%)
HSV	hsv(243, 75%, 85%)
CMYK	cmyk(70.6%, 74.8%, 0%, 14.5%)
CIE-LAB	lab(35.76, 53.74, -81.03)
CIE-LCH	lch(35.76, 97.23, 303.55°)
OKLab	oklab(46.94% 0.0199 -0.2343)
OKLCH	oklch(46.94% 0.235 274.8)
XYZ	xyz(16.1312, 8.8828, 67.1805)
Luminance	0.0888 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.74

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4037DA #D1DA37

analogous

#377FDA #4037DA #9137DA

triadic

#4037DA #DA4037 #37DA40

tetradic

#4037DA #DA377F #D1DA37 #37DA91

square

#4037DA #DA377F #D1DA37 #37DA91

split-complementary

#4037DA #DA9137 #7FDA37

monochromatic

#1D187F #2921B3 #4037DA #716BE4 #A39EED

Accessibility & contrast

On white

7.56

#4037DA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#4037DA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037DA

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037DA	#FFFFFF	#000000	##FFFFFF
##4037DA	1.00	7.56	2.78	7.56
#FFFFFF	7.56	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BDF

Deuteranopia (green-blind)

#004DD7

Tritanopia (blue-blind)

#006786

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #4037da;
/* rgb */ color: rgb(64, 55, 218);
/* oklch */ color: oklch(46.9% 0.235 274.8);

Tailwind

colors: {
  custom: {
    50: '#8b71e7',
    500: '#4037da',
    950: '#000000',
  },
}

SCSS

$custom: #4037da;
$custom-light: #8b71e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4037da",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 218
  },
  "hsl": {
    "h": 243.313,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.4694,
    "c": 0.23516,
    "h": 274.8
  },
  "luminance": 0.08884
}

Semantic roles & 50–950 ramp

primary

#4037DA

secondary

#D5D993

accent

#EC3CE2

background

#F9F6FE

surface

#F2ECFD

border

#CCC7D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #4037DA

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

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