#3640AF#3640AF

#3640AF is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.175 H 272.8°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#3640AF
RGB	rgb(54, 64, 175)
HSL	hsl(235, 53%, 45%)
HSV	hsv(235, 69%, 69%)
CMYK	cmyk(69.1%, 63.4%, 0%, 31.4%)
CIE-LAB	lab(33.02, 33.04, -60.40)
CIE-LCH	lch(33.02, 68.85, 298.68°)
OKLab	oklab(43.58% 0.0085 -0.1743)
OKLCH	oklch(43.58% 0.175 272.8)
XYZ	xyz(11.0900, 7.5452, 41.4210)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3640AF #AFA536

analogous

#367DAF #3640AF #6836AF

triadic

#3640AF #AF3640 #40AF36

tetradic

#3640AF #AF367D #AFA536 #36AF68

square

#3640AF #AF367D #AFA536 #36AF68

split-complementary

#3640AF #AF6836 #7DAF36

monochromatic

#191E51 #282F80 #3640AF #5761CB #868DDA

Accessibility & contrast

On white

8.37

#3640AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3640AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640AF

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640AF	#FFFFFF	#000000	##FFFFFF
##3640AF	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B3

Deuteranopia (green-blind)

#0048AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3640af;
/* rgb */ color: rgb(54, 64, 175);
/* oklch */ color: oklch(43.6% 0.175 272.8);

Tailwind

colors: {
  custom: {
    50: '#7d75c8',
    500: '#3640af',
    950: '#000000',
  },
}

SCSS

$custom: #3640af;
$custom-light: #7d75c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3640af",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 175
  },
  "hsl": {
    "h": 235.041,
    "s": 52.838,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43583,
    "c": 0.17453,
    "h": 272.8
  },
  "luminance": 0.07546
}

Semantic roles & 50–950 ramp

primary

#3640AF

secondary

#C3BE7D

accent

#D04CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3640AF

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

Preview Lab → · Contrast checker → · Palette generator →