#3640A2#3640A2

#3640A2 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.5% C 0.157 H 273.3°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#3640A2
RGB	rgb(54, 64, 162)
HSL	hsl(234, 50%, 42%)
HSV	hsv(234, 67%, 64%)
CMYK	cmyk(66.7%, 60.5%, 0%, 36.5%)
CIE-LAB	lab(31.94, 28.41, -54.37)
CIE-LCH	lch(31.94, 61.35, 297.59°)
OKLab	oklab(42.45% 0.0089 -0.1566)
OKLCH	oklch(42.45% 0.157 273.3)
XYZ	xyz(9.8741, 7.0588, 35.0175)
Luminance	0.0706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3640A2 #A29836

analogous

#3676A2 #3640A2 #6236A2

triadic

#3640A2 #A23640 #40A236

tetradic

#3640A2 #A23676 #A29836 #36A262

square

#3640A2 #A23676 #A29836 #36A262

split-complementary

#3640A2 #A26236 #76A236

monochromatic

#171C46 #272E74 #3640A2 #505BC5 #7E86D4

Accessibility & contrast

On white

8.71

#3640A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3640A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640A2

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640A2	#FFFFFF	#000000	##FFFFFF
##3640A2	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A5

Deuteranopia (green-blind)

#0046A0

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3640a2;
/* rgb */ color: rgb(54, 64, 162);
/* oklch */ color: oklch(42.5% 0.157 273.3);

Tailwind

colors: {
  custom: {
    50: '#7a74be',
    500: '#3640a2',
    950: '#000000',
  },
}

SCSS

$custom: #3640a2;
$custom-light: #7a74be;
$custom-dark: #000000;

JSON

{
  "hex": "#3640a2",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 162
  },
  "hsl": {
    "h": 234.444,
    "s": 50,
    "l": 42.353
  },
  "oklch": {
    "l": 0.42454,
    "c": 0.15686,
    "h": 273.3
  },
  "luminance": 0.0706
}

Semantic roles & 50–950 ramp

primary

#3640A2

secondary

#BDB777

accent

#CD4EDA

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #3640A2

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

Preview Lab → · Contrast checker → · Palette generator →