#3528B9#3528B9

#3528B9 is a dark, highly saturated blue. Relative luminance 0.058; OKLCH L 40.9% C 0.213 H 275.4°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#3528B9
RGB	rgb(53, 40, 185)
HSL	hsl(245, 64%, 44%)
HSV	hsv(245, 78%, 73%)
CMYK	cmyk(71.4%, 78.4%, 0%, 27.5%)
CIE-LAB	lab(28.84, 50.24, -73.22)
CIE-LCH	lch(28.84, 88.80, 304.46°)
OKLab	oklab(40.86% 0.0201 -0.2117)
OKLCH	oklch(40.86% 0.213 275.4)
XYZ	xyz(10.9811, 5.7762, 46.4257)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3528B9 #ACB928

analogous

#2864B9 #3528B9 #7E28B9

triadic

#3528B9 #B93528 #28B935

tetradic

#3528B9 #B92864 #ACB928 #28B97E

square

#3528B9 #B92864 #ACB928 #28B97E

split-complementary

#3528B9 #B97E28 #64B928

monochromatic

#181254 #271D87 #3528B9 #5447D7 #8379E2

Accessibility & contrast

On white

9.74

#3528B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#3528B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3528B9

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3528B9	#FFFFFF	#000000	##FFFFFF
##3528B9	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABD

Deuteranopia (green-blind)

#003DB6

Tritanopia (blue-blind)

#005470

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3528b9;
/* rgb */ color: rgb(53, 40, 185);
/* oklch */ color: oklch(40.9% 0.213 275.4);

Tailwind

colors: {
  custom: {
    50: '#8166cf',
    500: '#3528b9',
    950: '#000000',
  },
}

SCSS

$custom: #3528b9;
$custom-light: #8166cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3528b9",
  "rgb": {
    "r": 53,
    "g": 40,
    "b": 185
  },
  "hsl": {
    "h": 245.379,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.40861,
    "c": 0.21266,
    "h": 275.4
  },
  "luminance": 0.05777
}

Semantic roles & 50–950 ramp

primary

#3528B9

secondary

#C2CA73

accent

#E740D8

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3528B9

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

Preview Lab → · Contrast checker → · Palette generator →