#3A33BB#3A33BB

#3A33BB is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 42.9% C 0.203 H 275.8°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#3A33BB
RGB	rgb(58, 51, 187)
HSL	hsl(243, 57%, 47%)
HSV	hsv(243, 73%, 73%)
CMYK	cmyk(69%, 72.7%, 0%, 26.7%)
CIE-LAB	lab(31.47, 45.48, -70.05)
CIE-LCH	lch(31.47, 83.52, 302.99°)
OKLab	oklab(42.87% 0.0205 -0.2024)
OKLCH	oklch(42.87% 0.203 275.8)
XYZ	xyz(11.8954, 6.8540, 47.7001)
Luminance	0.0685 (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

#3A33BB #B4BB33

analogous

#3370BB #3A33BB #7E33BB

triadic

#3A33BB #BB3A33 #33BB3A

tetradic

#3A33BB #BB3370 #B4BB33 #33BB7E

square

#3A33BB #BB3370 #B4BB33 #33BB7E

split-complementary

#3A33BB #BB7E33 #70BB33

monochromatic

#1C195B #2B268B #3A33BB #6059D2 #8E89DF

Accessibility & contrast

On white

8.86

#3A33BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3A33BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A33BB

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A33BB	#FFFFFF	#000000	##FFFFFF
##3A33BB	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BF

Deuteranopia (green-blind)

#0044B9

Tritanopia (blue-blind)

#005974

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3a33bb;
/* rgb */ color: rgb(58, 51, 187);
/* oklch */ color: oklch(42.9% 0.203 275.8);

Tailwind

colors: {
  custom: {
    50: '#826cd1',
    500: '#3a33bb',
    950: '#000000',
  },
}

SCSS

$custom: #3a33bb;
$custom-light: #826cd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3a33bb",
  "rgb": {
    "r": 58,
    "g": 51,
    "b": 187
  },
  "hsl": {
    "h": 243.088,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4287,
    "c": 0.20349,
    "h": 275.8
  },
  "luminance": 0.06855
}

Semantic roles & 50–950 ramp

primary

#3A33BB

secondary

#C5C981

accent

#E047D9

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3A33BB

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

Preview Lab → · Contrast checker → · Palette generator →