#3744AB#3744AB

#3744AB is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.0% C 0.164 H 272.3°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#3744AB
RGB	rgb(55, 68, 171)
HSL	hsl(233, 51%, 44%)
HSV	hsv(233, 68%, 67%)
CMYK	cmyk(67.8%, 60.2%, 0%, 32.9%)
CIE-LAB	lab(33.74, 29.18, -56.83)
CIE-LCH	lch(33.74, 63.89, 297.18°)
OKLab	oklab(44.03% 0.0065 -0.1638)
OKLCH	oklch(44.03% 0.164 272.3)
XYZ	xyz(10.9909, 7.8857, 39.4631)
Luminance	0.0789 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3744AB #AB9E37

analogous

#377EAB #3744AB #6437AB

triadic

#3744AB #AB3744 #44AB37

tetradic

#3744AB #AB377E #AB9E37 #37AB64

square

#3744AB #AB377E #AB9E37 #37AB64

split-complementary

#3744AB #AB6437 #7EAB37

monochromatic

#191F4E #28327D #3744AB #5663C9 #858ED8

Accessibility & contrast

On white

8.15

#3744AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#3744AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3744AB

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3744AB	#FFFFFF	#000000	##FFFFFF
##3744AB	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AE

Deuteranopia (green-blind)

#004AA9

Tritanopia (blue-blind)

#005E71

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3744ab;
/* rgb */ color: rgb(55, 68, 171);
/* oklch */ color: oklch(44.0% 0.164 272.3);

Tailwind

colors: {
  custom: {
    50: '#7c77c5',
    500: '#3744ab',
    950: '#000000',
  },
}

SCSS

$custom: #3744ab;
$custom-light: #7c77c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3744ab",
  "rgb": {
    "r": 55,
    "g": 68,
    "b": 171
  },
  "hsl": {
    "h": 233.276,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.44032,
    "c": 0.1639,
    "h": 272.3
  },
  "luminance": 0.07887
}

Semantic roles & 50–950 ramp

primary

#3744AB

secondary

#C1BA7C

accent

#CB4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3744AB

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

Preview Lab → · Contrast checker → · Palette generator →