#3745B2#3745B2

#3745B2 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.8% C 0.172 H 271.9°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#3745B2
RGB	rgb(55, 69, 178)
HSL	hsl(233, 53%, 46%)
HSV	hsv(233, 69%, 70%)
CMYK	cmyk(69.1%, 61.2%, 0%, 30.2%)
CIE-LAB	lab(34.56, 31.04, -59.66)
CIE-LCH	lch(34.56, 67.25, 297.49°)
OKLab	oklab(44.82% 0.0056 -0.1721)
OKLCH	oklch(44.82% 0.172 271.9)
XYZ	xyz(11.7368, 8.2817, 43.0908)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3745B2 #B2A437

analogous

#3782B2 #3745B2 #6637B2

triadic

#3745B2 #B23745 #45B237

tetradic

#3745B2 #B23782 #B2A437 #37B266

square

#3745B2 #B23782 #B2A437 #37B266

split-complementary

#3745B2 #B26637 #82B237

monochromatic

#1A2154 #293383 #3745B2 #5A67CC #8992DB

Accessibility & contrast

On white

7.90

#3745B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3745B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3745B2

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3745B2	#FFFFFF	#000000	##FFFFFF
##3745B2	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B6

Deuteranopia (green-blind)

#004CB0

Tritanopia (blue-blind)

#006075

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3745b2;
/* rgb */ color: rgb(55, 69, 178);
/* oklch */ color: oklch(44.8% 0.172 271.9);

Tailwind

colors: {
  custom: {
    50: '#7e78ca',
    500: '#3745b2',
    950: '#000000',
  },
}

SCSS

$custom: #3745b2;
$custom-light: #7e78ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3745b2",
  "rgb": {
    "r": 55,
    "g": 69,
    "b": 178
  },
  "hsl": {
    "h": 233.171,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.44815,
    "c": 0.17216,
    "h": 271.9
  },
  "luminance": 0.08283
}

Semantic roles & 50–950 ramp

primary

#3745B2

secondary

#C5BD80

accent

#CC4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3745B2

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

Preview Lab → · Contrast checker → · Palette generator →