#3644AA#3644AA

#3644AA is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.9% C 0.163 H 271.9°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#3644AA
RGB	rgb(54, 68, 170)
HSL	hsl(233, 52%, 44%)
HSV	hsv(233, 68%, 67%)
CMYK	cmyk(68.2%, 60%, 0%, 33.3%)
CIE-LAB	lab(33.60, 28.67, -56.46)
CIE-LCH	lch(33.60, 63.33, 296.92°)
OKLab	oklab(43.89% 0.0055 -0.1627)
OKLCH	oklch(43.89% 0.163 271.9)
XYZ	xyz(10.8417, 7.8198, 38.9604)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3644AA #AA9C36

analogous

#367EAA #3644AA #6236AA

triadic

#3644AA #AA3644 #44AA36

tetradic

#3644AA #AA367E #AA9C36 #36AA62

square

#3644AA #AA367E #AA9C36 #36AA62

split-complementary

#3644AA #AA6236 #7EAA36

monochromatic

#181F4D #27317C #3644AA #5462C9 #838DD8

Accessibility & contrast

On white

8.19

#3644AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3644AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3644AA

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3644AA	#FFFFFF	#000000	##FFFFFF
##3644AA	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054AD

Deuteranopia (green-blind)

#004AA8

Tritanopia (blue-blind)

#005D70

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3644aa;
/* rgb */ color: rgb(54, 68, 170);
/* oklch */ color: oklch(43.9% 0.163 271.9);

Tailwind

colors: {
  custom: {
    50: '#7b77c4',
    500: '#3644aa',
    950: '#000000',
  },
}

SCSS

$custom: #3644aa;
$custom-light: #7b77c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3644aa",
  "rgb": {
    "r": 54,
    "g": 68,
    "b": 170
  },
  "hsl": {
    "h": 232.759,
    "s": 51.786,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43888,
    "c": 0.16281,
    "h": 271.9
  },
  "luminance": 0.07821
}

Semantic roles & 50–950 ramp

primary

#3644AA

secondary

#C1B97B

accent

#CA4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3644AA

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

Preview Lab → · Contrast checker → · Palette generator →