#3744A5#3744A5

#3744A5 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.5% C 0.156 H 272.4°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#3744A5
RGB	rgb(55, 68, 165)
HSL	hsl(233, 50%, 43%)
HSV	hsv(233, 67%, 65%)
CMYK	cmyk(66.7%, 58.8%, 0%, 35.3%)
CIE-LAB	lab(33.27, 27.03, -54.01)
CIE-LCH	lch(33.27, 60.40, 296.58°)
OKLab	oklab(43.53% 0.0065 -0.1555)
OKLCH	oklch(43.53% 0.156 272.4)
XYZ	xyz(10.4319, 7.6621, 36.5192)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3744A5 #A59837

analogous

#377BA5 #3744A5 #6137A5

triadic

#3744A5 #A53744 #44A537

tetradic

#3744A5 #A5377B #A59837 #37A561

square

#3744A5 #A5377B #A59837 #37A561

split-complementary

#3744A5 #A56137 #7BA537

monochromatic

#181E49 #283177 #3744A5 #5361C6 #818BD5

Accessibility & contrast

On white

8.29

#3744A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3744A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3744A5

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3744A5	#FFFFFF	#000000	##FFFFFF
##3744A5	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A8

Deuteranopia (green-blind)

#0049A3

Tritanopia (blue-blind)

#005C6E

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3744a5;
/* rgb */ color: rgb(55, 68, 165);
/* oklch */ color: oklch(43.5% 0.156 272.4);

Tailwind

colors: {
  custom: {
    50: '#7b77c0',
    500: '#3744a5',
    950: '#000000',
  },
}

SCSS

$custom: #3744a5;
$custom-light: #7b77c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3744a5",
  "rgb": {
    "r": 55,
    "g": 68,
    "b": 165
  },
  "hsl": {
    "h": 232.909,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.43531,
    "c": 0.15563,
    "h": 272.4
  },
  "luminance": 0.07663
}

Semantic roles & 50–950 ramp

primary

#3744A5

secondary

#BFB679

accent

#C94EDA

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #3744A5

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

Preview Lab → · Contrast checker → · Palette generator →