#3645B4#3645B4

#3645B4 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.9% C 0.175 H 271.5°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#3645B4
RGB	rgb(54, 69, 180)
HSL	hsl(233, 54%, 46%)
HSV	hsv(233, 70%, 71%)
CMYK	cmyk(70%, 61.7%, 0%, 29.4%)
CIE-LAB	lab(34.67, 31.62, -60.67)
CIE-LCH	lch(34.67, 68.42, 297.53°)
OKLab	oklab(44.93% 0.0045 -0.1751)
OKLCH	oklch(44.93% 0.175 271.5)
XYZ	xyz(11.8849, 8.3346, 44.1536)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3645B4 #B4A536

analogous

#3684B4 #3645B4 #6636B4

triadic

#3645B4 #B43645 #45B436

tetradic

#3645B4 #B43684 #B4A536 #36B466

square

#3645B4 #B43684 #B4A536 #36B466

split-complementary

#3645B4 #B46636 #84B436

monochromatic

#1A2156 #283385 #3645B4 #5A68CD #8993DC

Accessibility & contrast

On white

7.87

#3645B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3645B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3645B4

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3645B4	#FFFFFF	#000000	##FFFFFF
##3645B4	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B8

Deuteranopia (green-blind)

#004CB2

Tritanopia (blue-blind)

#006176

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3645b4;
/* rgb */ color: rgb(54, 69, 180);
/* oklch */ color: oklch(44.9% 0.175 271.5);

Tailwind

colors: {
  custom: {
    50: '#7e78cb',
    500: '#3645b4',
    950: '#000000',
  },
}

SCSS

$custom: #3645b4;
$custom-light: #7e78cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3645b4",
  "rgb": {
    "r": 54,
    "g": 69,
    "b": 180
  },
  "hsl": {
    "h": 232.857,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.44931,
    "c": 0.17513,
    "h": 271.5
  },
  "luminance": 0.08336
}

Semantic roles & 50–950 ramp

primary

#3645B4

secondary

#C6BD80

accent

#CC4BDD

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3645B4

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

Preview Lab → · Contrast checker → · Palette generator →