#4033BB#4033BB

#4033BB is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 43.3% C 0.202 H 278.1°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#4033BB
RGB	rgb(64, 51, 187)
HSL	hsl(246, 57%, 47%)
HSV	hsv(246, 73%, 73%)
CMYK	cmyk(65.8%, 72.7%, 0%, 26.7%)
CIE-LAB	lab(31.91, 46.17, -69.32)
CIE-LCH	lch(31.91, 83.28, 303.66°)
OKLab	oklab(43.29% 0.0283 -0.2001)
OKLCH	oklch(43.29% 0.202 278.1)
XYZ	xyz(12.2649, 7.0445, 47.7175)
Luminance	0.0704 (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

#4033BB #AEBB33

analogous

#336ABB #4033BB #8433BB

triadic

#4033BB #BB4033 #33BB40

tetradic

#4033BB #BB336A #AEBB33 #33BB84

square

#4033BB #BB336A #AEBB33 #33BB84

split-complementary

#4033BB #BB8433 #6ABB33

monochromatic

#1F195B #30268B #4033BB #6559D2 #9289DF

Accessibility & contrast

On white

8.72

#4033BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#4033BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4033BB

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4033BB	#FFFFFF	#000000	##FFFFFF
##4033BB	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BF

Deuteranopia (green-blind)

#0045B9

Tritanopia (blue-blind)

#005974

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #4033bb;
/* rgb */ color: rgb(64, 51, 187);
/* oklch */ color: oklch(43.3% 0.202 278.1);

Tailwind

colors: {
  custom: {
    50: '#856dd1',
    500: '#4033bb',
    950: '#000000',
  },
}

SCSS

$custom: #4033bb;
$custom-light: #856dd1;
$custom-dark: #000000;

JSON

{
  "hex": "#4033bb",
  "rgb": {
    "r": 64,
    "g": 51,
    "b": 187
  },
  "hsl": {
    "h": 245.735,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43292,
    "c": 0.20214,
    "h": 278.1
  },
  "luminance": 0.07045
}

Semantic roles & 50–950 ramp

primary

#4033BB

secondary

#C2C981

accent

#E047D2

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #4033BB

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

Preview Lab → · Contrast checker → · Palette generator →