#3645B2#3645B2

#3645B2 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.8% C 0.172 H 271.5°. Best body text is #FFFFFF at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#3645B2
RGB	rgb(54, 69, 178)
HSL	hsl(233, 53%, 45%)
HSV	hsv(233, 70%, 70%)
CMYK	cmyk(69.7%, 61.2%, 0%, 30.2%)
CIE-LAB	lab(34.51, 30.90, -59.76)
CIE-LCH	lch(34.51, 67.27, 297.35°)
OKLab	oklab(44.76% 0.0046 -0.1724)
OKLCH	oklch(44.76% 0.172 271.5)
XYZ	xyz(11.6826, 8.2537, 43.0883)
Luminance	0.0825 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3645B2 #B2A336

analogous

#3683B2 #3645B2 #6536B2

triadic

#3645B2 #B23645 #45B236

tetradic

#3645B2 #B23683 #B2A336 #36B265

square

#3645B2 #B23683 #B2A336 #36B265

split-complementary

#3645B2 #B26536 #83B236

monochromatic

#1A2154 #283383 #3645B2 #5967CD #8892DB

Accessibility & contrast

On white

7.92

#3645B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#3645B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3645B2

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3645B2	#FFFFFF	#000000	##FFFFFF
##3645B2	1.00	7.92	2.65	7.92
#FFFFFF	7.92	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B6

Deuteranopia (green-blind)

#004CB0

Tritanopia (blue-blind)

#006075

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3645b2;
/* rgb */ color: rgb(54, 69, 178);
/* oklch */ color: oklch(44.8% 0.172 271.5);

Tailwind

colors: {
  custom: {
    50: '#7d78ca',
    500: '#3645b2',
    950: '#000000',
  },
}

SCSS

$custom: #3645b2;
$custom-light: #7d78ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3645b2",
  "rgb": {
    "r": 54,
    "g": 69,
    "b": 178
  },
  "hsl": {
    "h": 232.742,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.44758,
    "c": 0.17244,
    "h": 271.5
  },
  "luminance": 0.08255
}

Semantic roles & 50–950 ramp

primary

#3645B2

secondary

#C5BC7F

accent

#CB4BDD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3645B2

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

Preview Lab → · Contrast checker → · Palette generator →