#3741A2#3741A2

#3741A2 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.7% C 0.155 H 273.4°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#3741A2
RGB	rgb(55, 65, 162)
HSL	hsl(234, 49%, 43%)
HSV	hsv(234, 66%, 64%)
CMYK	cmyk(66%, 59.9%, 0%, 36.5%)
CIE-LAB	lab(32.26, 27.91, -53.85)
CIE-LCH	lch(32.26, 60.65, 297.40°)
OKLab	oklab(42.71% 0.0092 -0.155)
OKLCH	oklch(42.71% 0.155 273.4)
XYZ	xyz(9.9853, 7.2006, 35.0391)
Luminance	0.0720 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3741A2 #A29837

analogous

#3776A2 #3741A2 #6337A2

triadic

#3741A2 #A23741 #41A237

tetradic

#3741A2 #A23776 #A29837 #37A263

square

#3741A2 #A23776 #A29837 #37A263

split-complementary

#3741A2 #A26337 #76A237

monochromatic

#181C47 #272F74 #3741A2 #525DC4 #8088D4

Accessibility & contrast

On white

8.61

#3741A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3741A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3741A2

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3741A2	#FFFFFF	#000000	##FFFFFF
##3741A2	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A5

Deuteranopia (green-blind)

#0047A0

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3741a2;
/* rgb */ color: rgb(55, 65, 162);
/* oklch */ color: oklch(42.7% 0.155 273.4);

Tailwind

colors: {
  custom: {
    50: '#7a75be',
    500: '#3741a2',
    950: '#000000',
  },
}

SCSS

$custom: #3741a2;
$custom-light: #7a75be;
$custom-dark: #000000;

JSON

{
  "hex": "#3741a2",
  "rgb": {
    "r": 55,
    "g": 65,
    "b": 162
  },
  "hsl": {
    "h": 234.393,
    "s": 49.309,
    "l": 42.549
  },
  "oklch": {
    "l": 0.42707,
    "c": 0.15531,
    "h": 273.4
  },
  "luminance": 0.07201
}

Semantic roles & 50–950 ramp

primary

#3741A2

secondary

#BDB778

accent

#CC4FD9

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #3741A2

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

Preview Lab → · Contrast checker → · Palette generator →