#3645B0#3645B0

#3645B0 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.6% C 0.170 H 271.5°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#3645B0
RGB	rgb(54, 69, 176)
HSL	hsl(233, 53%, 45%)
HSV	hsv(233, 69%, 69%)
CMYK	cmyk(69.3%, 60.8%, 0%, 31%)
CIE-LAB	lab(34.34, 30.19, -58.83)
CIE-LCH	lch(34.34, 66.13, 297.16°)
OKLab	oklab(44.59% 0.0046 -0.1697)
OKLCH	oklch(44.59% 0.17 271.5)
XYZ	xyz(11.4833, 8.1740, 42.0384)
Luminance	0.0818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3645B0 #B0A136

analogous

#3682B0 #3645B0 #6436B0

triadic

#3645B0 #B03645 #45B036

tetradic

#3645B0 #B03682 #B0A136 #36B064

square

#3645B0 #B03682 #B0A136 #36B064

split-complementary

#3645B0 #B06436 #82B036

monochromatic

#192052 #283381 #3645B0 #5866CC #8691DA

Accessibility & contrast

On white

7.97

#3645B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#3645B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3645B0

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3645B0	#FFFFFF	#000000	##FFFFFF
##3645B0	1.00	7.97	2.64	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B4

Deuteranopia (green-blind)

#004BAE

Tritanopia (blue-blind)

#006074

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3645b0;
/* rgb */ color: rgb(54, 69, 176);
/* oklch */ color: oklch(44.6% 0.170 271.5);

Tailwind

colors: {
  custom: {
    50: '#7d78c8',
    500: '#3645b0',
    950: '#000000',
  },
}

SCSS

$custom: #3645b0;
$custom-light: #7d78c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3645b0",
  "rgb": {
    "r": 54,
    "g": 69,
    "b": 176
  },
  "hsl": {
    "h": 232.623,
    "s": 53.043,
    "l": 45.098
  },
  "oklch": {
    "l": 0.44586,
    "c": 0.16973,
    "h": 271.5
  },
  "luminance": 0.08175
}

Semantic roles & 50–950 ramp

primary

#3645B0

secondary

#C4BB7E

accent

#CB4BDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3645B0

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

Preview Lab → · Contrast checker → · Palette generator →