#3747B2#3747B2

#3747B2 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.2% C 0.170 H 271.4°. Best body text is #FFFFFF at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#3747B2
RGB	rgb(55, 71, 178)
HSL	hsl(232, 53%, 46%)
HSV	hsv(232, 69%, 70%)
CMYK	cmyk(69.1%, 60.1%, 0%, 30.2%)
CIE-LAB	lab(35.07, 29.75, -58.84)
CIE-LCH	lch(35.07, 65.93, 296.82°)
OKLab	oklab(45.19% 0.004 -0.1696)
OKLCH	oklch(45.19% 0.17 271.4)
XYZ	xyz(11.8620, 8.5319, 43.1325)
Luminance	0.0853 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3747B2 #B2A237

analogous

#3784B2 #3747B2 #6437B2

triadic

#3747B2 #B23747 #47B237

tetradic

#3747B2 #B23784 #B2A237 #37B264

square

#3747B2 #B23784 #B2A237 #37B264

split-complementary

#3747B2 #B26437 #84B237

monochromatic

#1A2254 #293483 #3747B2 #5A69CC #8994DB

Accessibility & contrast

On white

7.76

#3747B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3747B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3747B2

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747B2	#FFFFFF	#000000	##FFFFFF
##3747B2	1.00	7.76	2.71	7.76
#FFFFFF	7.76	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B6

Deuteranopia (green-blind)

#004DB0

Tritanopia (blue-blind)

#006275

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3747b2;
/* rgb */ color: rgb(55, 71, 178);
/* oklch */ color: oklch(45.2% 0.170 271.4);

Tailwind

colors: {
  custom: {
    50: '#7d7aca',
    500: '#3747b2',
    950: '#000000',
  },
}

SCSS

$custom: #3747b2;
$custom-light: #7d7aca;
$custom-dark: #000000;

JSON

{
  "hex": "#3747b2",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 178
  },
  "hsl": {
    "h": 232.195,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.45189,
    "c": 0.16969,
    "h": 271.4
  },
  "luminance": 0.08533
}

Semantic roles & 50–950 ramp

primary

#3747B2

secondary

#C5BC80

accent

#C94CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3747B2

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

Preview Lab → · Contrast checker → · Palette generator →