#3528B3#3528B3

#3528B3 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.2% C 0.206 H 276.0°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#3528B3
RGB	rgb(53, 40, 179)
HSL	hsl(246, 63%, 43%)
HSV	hsv(246, 78%, 70%)
CMYK	cmyk(70.4%, 77.7%, 0%, 29.8%)
CIE-LAB	lab(28.19, 48.38, -70.73)
CIE-LCH	lch(28.19, 85.69, 304.37°)
OKLab	oklab(40.21% 0.0215 -0.2045)
OKLCH	oklch(40.21% 0.206 276)
XYZ	xyz(10.3610, 5.5282, 43.1601)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3528B3 #A6B328

analogous

#2860B3 #3528B3 #7B28B3

triadic

#3528B3 #B33528 #28B335

tetradic

#3528B3 #B32860 #A6B328 #28B37B

square

#3528B3 #B32860 #A6B328 #28B37B

split-complementary

#3528B3 #B37B28 #60B328

monochromatic

#17124F #261D81 #3528B3 #5143D5 #7F75E0

Accessibility & contrast

On white

9.97

#3528B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#3528B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3528B3

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3528B3	#FFFFFF	#000000	##FFFFFF
##3528B3	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B7

Deuteranopia (green-blind)

#003CB1

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3528b3;
/* rgb */ color: rgb(53, 40, 179);
/* oklch */ color: oklch(40.2% 0.206 276.0);

Tailwind

colors: {
  custom: {
    50: '#7f65cb',
    500: '#3528b3',
    950: '#000000',
  },
}

SCSS

$custom: #3528b3;
$custom-light: #7f65cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3528b3",
  "rgb": {
    "r": 53,
    "g": 40,
    "b": 179
  },
  "hsl": {
    "h": 245.612,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40213,
    "c": 0.20559,
    "h": 276
  },
  "luminance": 0.05529
}

Semantic roles & 50–950 ramp

primary

#3528B3

secondary

#BFC86F

accent

#E641D7

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3528B3

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

Preview Lab → · Contrast checker → · Palette generator →