#3428B4#3428B4

#3428B4 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.3% C 0.207 H 275.5°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#3428B4
RGB	rgb(52, 40, 180)
HSL	hsl(245, 64%, 43%)
HSV	hsv(245, 78%, 71%)
CMYK	cmyk(71.1%, 77.8%, 0%, 29.4%)
CIE-LAB	lab(28.23, 48.60, -71.27)
CIE-LCH	lch(28.23, 86.26, 304.29°)
OKLab	oklab(40.25% 0.02 -0.206)
OKLCH	oklch(40.25% 0.207 275.5)
XYZ	xyz(10.4105, 5.5419, 43.6922)
Luminance	0.0554 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3428B4 #A8B428

analogous

#2862B4 #3428B4 #7A28B4

triadic

#3428B4 #B43428 #28B434

tetradic

#3428B4 #B42862 #A8B428 #28B47A

square

#3428B4 #B42862 #A8B428 #28B47A

split-complementary

#3428B4 #B47A28 #62B428

monochromatic

#171250 #261D82 #3428B4 #5044D5 #7F76E1

Accessibility & contrast

On white

9.96

#3428B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#3428B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3428B4

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3428B4	#FFFFFF	#000000	##FFFFFF
##3428B4	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B8

Deuteranopia (green-blind)

#003CB2

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3428b4;
/* rgb */ color: rgb(52, 40, 180);
/* oklch */ color: oklch(40.3% 0.207 275.5);

Tailwind

colors: {
  custom: {
    50: '#7f65cc',
    500: '#3428b4',
    950: '#000000',
  },
}

SCSS

$custom: #3428b4;
$custom-light: #7f65cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3428b4",
  "rgb": {
    "r": 52,
    "g": 40,
    "b": 180
  },
  "hsl": {
    "h": 245.143,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40252,
    "c": 0.20702,
    "h": 275.5
  },
  "luminance": 0.05543
}

Semantic roles & 50–950 ramp

primary

#3428B4

secondary

#C0C870

accent

#E741D8

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3428B4

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

Preview Lab → · Contrast checker → · Palette generator →