#4039CC#4039CC

#4039CC is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.8% C 0.217 H 275.7°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#4039CC
RGB	rgb(64, 57, 204)
HSL	hsl(243, 59%, 51%)
HSV	hsv(243, 72%, 80%)
CMYK	cmyk(68.6%, 72.1%, 0%, 20%)
CIE-LAB	lab(34.75, 48.25, -74.60)
CIE-LCH	lch(34.75, 88.84, 302.89°)
OKLab	oklab(45.81% 0.0215 -0.2156)
OKLCH	oklch(45.81% 0.217 275.7)
XYZ	xyz(14.4730, 8.3745, 57.9688)
Luminance	0.0838 (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

#4039CC #C5CC39

analogous

#397BCC #4039CC #8939CC

triadic

#4039CC #CC4039 #39CC40

tetradic

#4039CC #CC397B #C5CC39 #39CC89

square

#4039CC #CC397B #C5CC39 #39CC89

split-complementary

#4039CC #CC8939 #7BCC39

monochromatic

#201C6E #2F299F #4039CC #6F6AD9 #9E9AE5

Accessibility & contrast

On white

7.85

#4039CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4039CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039CC

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039CC	#FFFFFF	#000000	##FFFFFF
##4039CC	1.00	7.85	2.68	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D0

Deuteranopia (green-blind)

#004BC9

Tritanopia (blue-blind)

#00627F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4039cc;
/* rgb */ color: rgb(64, 57, 204);
/* oklch */ color: oklch(45.8% 0.217 275.7);

Tailwind

colors: {
  custom: {
    50: '#8871dd',
    500: '#4039cc',
    950: '#000000',
  },
}

SCSS

$custom: #4039cc;
$custom-light: #8871dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4039cc",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 204
  },
  "hsl": {
    "h": 242.857,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.45811,
    "c": 0.21666,
    "h": 275.7
  },
  "luminance": 0.08376
}

Semantic roles & 50–950 ramp

primary

#4039CC

secondary

#CED190

accent

#E246DB

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4039CC

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

Preview Lab → · Contrast checker → · Palette generator →