#3751AE#3751AE

#3751AE is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.8% C 0.152 H 268.3°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#3751AE
RGB	rgb(55, 81, 174)
HSL	hsl(227, 52%, 45%)
HSV	hsv(227, 68%, 68%)
CMYK	cmyk(68.4%, 53.4%, 0%, 31.8%)
CIE-LAB	lab(37.39, 21.77, -52.69)
CIE-LCH	lch(37.39, 57.01, 292.44°)
OKLab	oklab(46.84% -0.0046 -0.1514)
OKLCH	oklch(46.84% 0.152 268.3)
XYZ	xyz(12.1553, 9.7519, 41.2779)
Luminance	0.0975 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3751AE #AE9437

analogous

#378CAE #3751AE #5937AE

triadic

#3751AE #AE3751 #51AE37

tetradic

#3751AE #AE378C #AE9437 #37AE59

square

#3751AE #AE378C #AE9437 #37AE59

split-complementary

#3751AE #AE5937 #8CAE37

monochromatic

#1A2651 #283B7F #3751AE #5871CA #8698D9

Accessibility & contrast

On white

7.12

#3751AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3751AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3751AE

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3751AE	#FFFFFF	#000000	##FFFFFF
##3751AE	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#115EB1

Deuteranopia (green-blind)

#0053AC

Tritanopia (blue-blind)

#006777

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3751ae;
/* rgb */ color: rgb(55, 81, 174);
/* oklch */ color: oklch(46.8% 0.152 268.3);

Tailwind

colors: {
  custom: {
    50: '#7c81c7',
    500: '#3751ae',
    950: '#000000',
  },
}

SCSS

$custom: #3751ae;
$custom-light: #7c81c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3751ae",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 174
  },
  "hsl": {
    "h": 226.891,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.46835,
    "c": 0.15151,
    "h": 268.3
  },
  "luminance": 0.09753
}

Semantic roles & 50–950 ramp

primary

#3751AE

secondary

#C3B47E

accent

#BC4CDB

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3751AE

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

Preview Lab → · Contrast checker → · Palette generator →