#3540CB#3540CB

#3540CB is a mid, highly saturated blue. Relative luminance 0.087; OKLCH L 46.1% C 0.211 H 271.4°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#3540CB
RGB	rgb(53, 64, 203)
HSL	hsl(236, 59%, 50%)
HSV	hsv(236, 74%, 80%)
CMYK	cmyk(73.9%, 68.5%, 0%, 20.4%)
CIE-LAB	lab(35.47, 42.70, -72.86)
CIE-LCH	lch(35.47, 84.45, 300.38°)
OKLab	oklab(46.12% 0.0051 -0.2108)
OKLCH	oklch(46.12% 0.211 271.4)
XYZ	xyz(14.0774, 8.7340, 57.4323)
Luminance	0.0873 (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

#3540CB #CBC035

analogous

#358BCB #3540CB #7535CB

triadic

#3540CB #CB3540 #40CB35

tetradic

#3540CB #CB358B #CBC035 #35CB75

square

#3540CB #CB358B #CBC035 #35CB75

split-complementary

#3540CB #CB7535 #8BCB35

monochromatic

#1B216A #28309B #3540CB #666ED8 #969CE4

Accessibility & contrast

On white

7.64

#3540CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#3540CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540CB

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540CB	#FFFFFF	#000000	##FFFFFF
##3540CB	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCF

Deuteranopia (green-blind)

#004CC8

Tritanopia (blue-blind)

#006680

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3540cb;
/* rgb */ color: rgb(53, 64, 203);
/* oklch */ color: oklch(46.1% 0.211 271.4);

Tailwind

colors: {
  custom: {
    50: '#8375dc',
    500: '#3540cb',
    950: '#000000',
  },
}

SCSS

$custom: #3540cb;
$custom-light: #8375dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3540cb",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 203
  },
  "hsl": {
    "h": 235.6,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.4612,
    "c": 0.21086,
    "h": 271.4
  },
  "luminance": 0.08735
}

Semantic roles & 50–950 ramp

primary

#3540CB

secondary

#CFCB8C

accent

#D746E2

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3540CB

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

Preview Lab → · Contrast checker → · Palette generator →