#4039DA#4039DA

#4039DA is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 47.2% C 0.233 H 274.6°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#4039DA
RGB	rgb(64, 57, 218)
HSL	hsl(243, 69%, 54%)
HSV	hsv(243, 74%, 85%)
CMYK	cmyk(70.6%, 73.9%, 0%, 14.5%)
CIE-LAB	lab(36.13, 52.68, -80.41)
CIE-LCH	lch(36.13, 96.13, 303.23°)
OKLab	oklab(47.2% 0.0189 -0.2325)
OKLCH	oklch(47.2% 0.233 274.6)
XYZ	xyz(16.2282, 9.0766, 67.2128)
Luminance	0.0908 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.77

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4039DA #D3DA39

analogous

#3983DA #4039DA #9139DA

triadic

#4039DA #DA4039 #39DA40

tetradic

#4039DA #DA3983 #D3DA39 #39DA91

square

#4039DA #DA3983 #D3DA39 #39DA91

split-complementary

#4039DA #DA9139 #83DA39

monochromatic

#1D1881 #2822B4 #4039DA #726DE4 #A3A0ED

Accessibility & contrast

On white

7.46

#4039DA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#4039DA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039DA

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039DA	#FFFFFF	#000000	##FFFFFF
##4039DA	1.00	7.46	2.82	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CDF

Deuteranopia (green-blind)

#004DD7

Tritanopia (blue-blind)

#006887

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4039da;
/* rgb */ color: rgb(64, 57, 218);
/* oklch */ color: oklch(47.2% 0.233 274.6);

Tailwind

colors: {
  custom: {
    50: '#8b72e7',
    500: '#4039da',
    950: '#000000',
  },
}

SCSS

$custom: #4039da;
$custom-light: #8b72e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4039da",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 218
  },
  "hsl": {
    "h": 242.609,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.47204,
    "c": 0.23331,
    "h": 274.6
  },
  "luminance": 0.09078
}

Semantic roles & 50–950 ramp

primary

#4039DA

secondary

#D7DA95

accent

#EB3CE4

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #4039DA

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

Preview Lab → · Contrast checker → · Palette generator →