#3640AA#3640AA

#3640AA is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.1% C 0.168 H 273.0°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3640AA
RGB	rgb(54, 64, 170)
HSL	hsl(235, 52%, 44%)
HSV	hsv(235, 68%, 67%)
CMYK	cmyk(68.2%, 62.4%, 0%, 33.3%)
CIE-LAB	lab(32.60, 31.27, -58.11)
CIE-LCH	lch(32.60, 65.98, 298.28°)
OKLab	oklab(43.14% 0.0087 -0.1676)
OKLCH	oklch(43.14% 0.168 273)
XYZ	xyz(10.6080, 7.3524, 38.8825)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3640AA #AAA036

analogous

#367AAA #3640AA #6636AA

triadic

#3640AA #AA3640 #40AA36

tetradic

#3640AA #AA367A #AAA036 #36AA66

square

#3640AA #AA367A #AAA036 #36AA66

split-complementary

#3640AA #AA6636 #7AAA36

monochromatic

#181D4D #272F7C #3640AA #545EC9 #838AD8

Accessibility & contrast

On white

8.50

#3640AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3640AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640AA

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640AA	#FFFFFF	#000000	##FFFFFF
##3640AA	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AD

Deuteranopia (green-blind)

#0047A8

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3640aa;
/* rgb */ color: rgb(54, 64, 170);
/* oklch */ color: oklch(43.1% 0.168 273.0);

Tailwind

colors: {
  custom: {
    50: '#7c75c4',
    500: '#3640aa',
    950: '#000000',
  },
}

SCSS

$custom: #3640aa;
$custom-light: #7c75c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3640aa",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 170
  },
  "hsl": {
    "h": 234.828,
    "s": 51.786,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43143,
    "c": 0.16781,
    "h": 273
  },
  "luminance": 0.07353
}

Semantic roles & 50–950 ramp

primary

#3640AA

secondary

#C1BB7B

accent

#CF4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3640AA

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

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