#4039BE#4039BE

#4039BE is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.5% C 0.200 H 276.9°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#4039BE
RGB	rgb(64, 57, 190)
HSL	hsl(243, 54%, 48%)
HSV	hsv(243, 70%, 75%)
CMYK	cmyk(66.3%, 70%, 0%, 25.5%)
CIE-LAB	lab(33.42, 43.73, -68.60)
CIE-LCH	lch(33.42, 81.35, 302.52°)
OKLab	oklab(44.46% 0.0238 -0.1981)
OKLCH	oklch(44.46% 0.2 276.9)
XYZ	xyz(12.8687, 7.7328, 49.5196)
Luminance	0.0773 (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

#4039BE #B7BE39

analogous

#3974BE #4039BE #8239BE

triadic

#4039BE #BE4039 #39BE40

tetradic

#4039BE #BE3974 #B7BE39 #39BE82

square

#4039BE #BE3974 #B7BE39 #39BE82

split-complementary

#4039BE #BE8239 #74BE39

monochromatic

#201D60 #302B8F #4039BE #6964D0 #9793DF

Accessibility & contrast

On white

8.25

#4039BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#4039BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039BE

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039BE	#FFFFFF	#000000	##FFFFFF
##4039BE	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C2

Deuteranopia (green-blind)

#0049BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4039be;
/* rgb */ color: rgb(64, 57, 190);
/* oklch */ color: oklch(44.5% 0.200 276.9);

Tailwind

colors: {
  custom: {
    50: '#8571d3',
    500: '#4039be',
    950: '#000000',
  },
}

SCSS

$custom: #4039be;
$custom-light: #8571d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4039be",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 190
  },
  "hsl": {
    "h": 243.158,
    "s": 53.846,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44458,
    "c": 0.1995,
    "h": 276.9
  },
  "luminance": 0.07734
}

Semantic roles & 50–950 ramp

primary

#4039BE

secondary

#C6CA89

accent

#DD4BD6

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4039BE

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

Preview Lab → · Contrast checker → · Palette generator →