#4033AB#4033AB

#4033AB is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.8% C 0.182 H 279.9°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#4033AB
RGB	rgb(64, 51, 171)
HSL	hsl(247, 54%, 44%)
HSV	hsv(247, 70%, 67%)
CMYK	cmyk(62.6%, 70.2%, 0%, 32.9%)
CIE-LAB	lab(30.39, 41.05, -62.28)
CIE-LCH	lch(30.39, 74.60, 303.39°)
OKLab	oklab(41.75% 0.0313 -0.1796)
OKLCH	oklch(41.75% 0.182 279.9)
XYZ	xyz(10.6465, 6.3971, 39.1939)
Luminance	0.0640 (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

#4033AB #9EAB33

analogous

#3362AB #4033AB #7C33AB

triadic

#4033AB #AB4033 #33AB40

tetradic

#4033AB #AB3362 #9EAB33 #33AB7C

square

#4033AB #AB3362 #9EAB33 #33AB7C

split-complementary

#4033AB #AB7C33 #62AB33

monochromatic

#1D174D #2E257C #4033AB #5E50CB #897FD9

Accessibility & contrast

On white

9.21

#4033AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#4033AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4033AB

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4033AB	#FFFFFF	#000000	##FFFFFF
##4033AB	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAF

Deuteranopia (green-blind)

#0043A9

Tritanopia (blue-blind)

#00536B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #4033ab;
/* rgb */ color: rgb(64, 51, 171);
/* oklch */ color: oklch(41.8% 0.182 279.9);

Tailwind

colors: {
  custom: {
    50: '#826cc5',
    500: '#4033ab',
    950: '#000000',
  },
}

SCSS

$custom: #4033ab;
$custom-light: #826cc5;
$custom-dark: #000000;

JSON

{
  "hex": "#4033ab",
  "rgb": {
    "r": 64,
    "g": 51,
    "b": 171
  },
  "hsl": {
    "h": 246.5,
    "s": 54.054,
    "l": 43.529
  },
  "oklch": {
    "l": 0.41751,
    "c": 0.18229,
    "h": 279.9
  },
  "luminance": 0.06398
}

Semantic roles & 50–950 ramp

primary

#4033AB

secondary

#BAC278

accent

#DD4ACD

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4033AB

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

Preview Lab → · Contrast checker → · Palette generator →