#4039C8#4039C8

#4039C8 is a mid, highly saturated blue. Relative luminance 0.082; OKLCH L 45.4% C 0.212 H 276.0°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#4039C8
RGB	rgb(64, 57, 200)
HSL	hsl(243, 57%, 50%)
HSV	hsv(243, 72%, 78%)
CMYK	cmyk(68%, 71.5%, 0%, 21.6%)
CIE-LAB	lab(34.37, 46.96, -72.90)
CIE-LCH	lch(34.37, 86.72, 302.79°)
OKLab	oklab(45.42% 0.0222 -0.2106)
OKLCH	oklch(45.42% 0.212 276)
XYZ	xyz(13.9994, 8.1851, 55.4745)
Luminance	0.0819 (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

#4039C8 #C1C839

analogous

#3979C8 #4039C8 #8739C8

triadic

#4039C8 #C84039 #39C840

tetradic

#4039C8 #C83979 #C1C839 #39C887

square

#4039C8 #C83979 #C1C839 #39C887

split-complementary

#4039C8 #C88739 #79C839

monochromatic

#211D69 #302B99 #4039C8 #6E69D5 #9C99E3

Accessibility & contrast

On white

7.96

#4039C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#4039C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039C8

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039C8	#FFFFFF	#000000	##FFFFFF
##4039C8	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CC

Deuteranopia (green-blind)

#004AC5

Tritanopia (blue-blind)

#00617D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4039c8;
/* rgb */ color: rgb(64, 57, 200);
/* oklch */ color: oklch(45.4% 0.212 276.0);

Tailwind

colors: {
  custom: {
    50: '#8771da',
    500: '#4039c8',
    950: '#000000',
  },
}

SCSS

$custom: #4039c8;
$custom-light: #8771da;
$custom-dark: #000000;

JSON

{
  "hex": "#4039c8",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 200
  },
  "hsl": {
    "h": 242.937,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.4542,
    "c": 0.21182,
    "h": 276
  },
  "luminance": 0.08186
}

Semantic roles & 50–950 ramp

primary

#4039C8

secondary

#CBCE8F

accent

#E048D8

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4039C8

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

Preview Lab → · Contrast checker → · Palette generator →