#3421BB#3421BB

#3421BB is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 40.2% C 0.221 H 275.4°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#3421BB
RGB	rgb(52, 33, 187)
HSL	hsl(247, 70%, 43%)
HSV	hsv(247, 82%, 73%)
CMYK	cmyk(72.2%, 82.4%, 0%, 26.7%)
CIE-LAB	lab(27.86, 54.08, -76.04)
CIE-LCH	lch(27.86, 93.31, 305.42°)
OKLab	oklab(40.23% 0.0209 -0.2198)
OKLCH	oklch(40.23% 0.221 275.4)
XYZ	xyz(10.9267, 5.4046, 47.4714)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3421BB #A8BB21

analogous

#215BBB #3421BB #8121BB

triadic

#3421BB #BB3421 #21BB34

tetradic

#3421BB #BB215B #A8BB21 #21BB81

square

#3421BB #BB215B #A8BB21 #21BB81

split-complementary

#3421BB #BB8121 #5BBB21

monochromatic

#170F53 #261887 #3421BB #503DDD #7F71E6

Accessibility & contrast

On white

10.09

#3421BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#3421BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3421BB

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3421BB	#FFFFFF	#000000	##FFFFFF
##3421BB	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048BF

Deuteranopia (green-blind)

#003BB8

Tritanopia (blue-blind)

#005270

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3421bb;
/* rgb */ color: rgb(52, 33, 187);
/* oklch */ color: oklch(40.2% 0.221 275.4);

Tailwind

colors: {
  custom: {
    50: '#8162d1',
    500: '#3421bb',
    950: '#000000',
  },
}

SCSS

$custom: #3421bb;
$custom-light: #8162d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3421bb",
  "rgb": {
    "r": 52,
    "g": 33,
    "b": 187
  },
  "hsl": {
    "h": 247.403,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40225,
    "c": 0.22081,
    "h": 275.4
  },
  "luminance": 0.05406
}

Semantic roles & 50–950 ramp

primary

#3421BB

secondary

#C0CC6B

accent

#ED3BD7

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0514

muted

#7D7A83

Preview Lab

Preview with #3421BB

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

Preview Lab → · Contrast checker → · Palette generator →