#4033AA#4033AA

#4033AA is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.7% C 0.181 H 280.0°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#4033AA
RGB	rgb(64, 51, 170)
HSL	hsl(247, 54%, 43%)
HSV	hsv(247, 70%, 67%)
CMYK	cmyk(62.4%, 70%, 0%, 33.3%)
CIE-LAB	lab(30.30, 40.73, -61.83)
CIE-LCH	lch(30.30, 74.04, 303.37°)
OKLab	oklab(41.66% 0.0314 -0.1783)
OKLCH	oklch(41.66% 0.181 280)
XYZ	xyz(10.5516, 6.3591, 38.6938)
Luminance	0.0636 (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

#4033AA #9DAA33

analogous

#3361AA #4033AA #7B33AA

triadic

#4033AA #AA4033 #33AA40

tetradic

#4033AA #AA3361 #9DAA33 #33AA7B

square

#4033AA #AA3361 #9DAA33 #33AA7B

split-complementary

#4033AA #AA7B33 #61AA33

monochromatic

#1D174C #2E257B #4033AA #5D50CA #897FD9

Accessibility & contrast

On white

9.24

#4033AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#4033AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4033AA

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4033AA	#FFFFFF	#000000	##FFFFFF
##4033AA	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAE

Deuteranopia (green-blind)

#0043A8

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #4033aa;
/* rgb */ color: rgb(64, 51, 170);
/* oklch */ color: oklch(41.7% 0.181 280.0);

Tailwind

colors: {
  custom: {
    50: '#816cc4',
    500: '#4033aa',
    950: '#000000',
  },
}

SCSS

$custom: #4033aa;
$custom-light: #816cc4;
$custom-dark: #000000;

JSON

{
  "hex": "#4033aa",
  "rgb": {
    "r": 64,
    "g": 51,
    "b": 170
  },
  "hsl": {
    "h": 246.555,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.41657,
    "c": 0.18103,
    "h": 280
  },
  "luminance": 0.0636
}

Semantic roles & 50–950 ramp

primary

#4033AA

secondary

#B9C277

accent

#DD4BCD

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4033AA

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

Preview Lab → · Contrast checker → · Palette generator →