#3751AD#3751AD

#3751AD is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.8% C 0.150 H 268.2°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#3751AD
RGB	rgb(55, 81, 173)
HSL	hsl(227, 52%, 45%)
HSV	hsv(227, 68%, 68%)
CMYK	cmyk(68.2%, 53.2%, 0%, 32.2%)
CIE-LAB	lab(37.32, 21.40, -52.21)
CIE-LCH	lch(37.32, 56.43, 292.29°)
OKLab	oklab(46.76% -0.0047 -0.15)
OKLCH	oklch(46.76% 0.15 268.2)
XYZ	xyz(12.0582, 9.7131, 40.7664)
Luminance	0.0971 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3751AD #AD9337

analogous

#378CAD #3751AD #5837AD

triadic

#3751AD #AD3751 #51AD37

tetradic

#3751AD #AD378C #AD9337 #37AD58

square

#3751AD #AD378C #AD9337 #37AD58

split-complementary

#3751AD #AD5837 #8CAD37

monochromatic

#192650 #283B7F #3751AD #5771CA #8698D8

Accessibility & contrast

On white

7.14

#3751AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#3751AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3751AD

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3751AD	#FFFFFF	#000000	##FFFFFF
##3751AD	1.00	7.14	2.94	7.14
#FFFFFF	7.14	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#145DB0

Deuteranopia (green-blind)

#0053AB

Tritanopia (blue-blind)

#006777

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3751ad;
/* rgb */ color: rgb(55, 81, 173);
/* oklch */ color: oklch(46.8% 0.150 268.2);

Tailwind

colors: {
  custom: {
    50: '#7c81c6',
    500: '#3751ad',
    950: '#000000',
  },
}

SCSS

$custom: #3751ad;
$custom-light: #7c81c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3751ad",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 173
  },
  "hsl": {
    "h": 226.78,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.46759,
    "c": 0.1501,
    "h": 268.2
  },
  "luminance": 0.09714
}

Semantic roles & 50–950 ramp

primary

#3751AD

secondary

#C2B37D

accent

#BC4DDB

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3751AD

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

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