#3743B2#3743B2

#3743B2 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.4% C 0.175 H 272.4°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#3743B2
RGB	rgb(55, 67, 178)
HSL	hsl(234, 53%, 46%)
HSV	hsv(234, 69%, 70%)
CMYK	cmyk(69.1%, 62.4%, 0%, 30.2%)
CIE-LAB	lab(34.07, 32.33, -60.47)
CIE-LCH	lch(34.07, 68.57, 298.13°)
OKLab	oklab(44.45% 0.0072 -0.1745)
OKLCH	oklch(44.45% 0.175 272.4)
XYZ	xyz(11.6159, 8.0398, 43.0505)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.63

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3743B2 #B2A637

analogous

#3780B2 #3743B2 #6837B2

triadic

#3743B2 #B23743 #43B237

tetradic

#3743B2 #B23780 #B2A637 #37B268

square

#3743B2 #B23780 #B2A637 #37B268

split-complementary

#3743B2 #B26837 #80B237

monochromatic

#1A2054 #293183 #3743B2 #5A65CC #8991DB

Accessibility & contrast

On white

8.05

#3743B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#3743B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3743B2

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3743B2	#FFFFFF	#000000	##FFFFFF
##3743B2	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B6

Deuteranopia (green-blind)

#004BB0

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3743b2;
/* rgb */ color: rgb(55, 67, 178);
/* oklch */ color: oklch(44.4% 0.175 272.4);

Tailwind

colors: {
  custom: {
    50: '#7e77ca',
    500: '#3743b2',
    950: '#000000',
  },
}

SCSS

$custom: #3743b2;
$custom-light: #7e77ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3743b2",
  "rgb": {
    "r": 55,
    "g": 67,
    "b": 178
  },
  "hsl": {
    "h": 234.146,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.44449,
    "c": 0.17462,
    "h": 272.4
  },
  "luminance": 0.08041
}

Semantic roles & 50–950 ramp

primary

#3743B2

secondary

#C5BE80

accent

#CE4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3743B2

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

Preview Lab → · Contrast checker → · Palette generator →