#3751AA#3751AA

#3751AA is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.5% C 0.146 H 268.0°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#3751AA
RGB	rgb(55, 81, 170)
HSL	hsl(226, 51%, 44%)
HSV	hsv(226, 68%, 67%)
CMYK	cmyk(67.6%, 52.4%, 0%, 33.3%)
CIE-LAB	lab(37.11, 20.30, -50.77)
CIE-LCH	lch(37.11, 54.68, 291.79°)
OKLab	oklab(46.53% -0.005 -0.1458)
OKLCH	oklch(46.53% 0.146 268)
XYZ	xyz(11.7712, 9.5982, 39.2547)
Luminance	0.0960 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3751AA #AA9037

analogous

#378BAA #3751AA #5737AA

triadic

#3751AA #AA3751 #51AA37

tetradic

#3751AA #AA378B #AA9037 #37AA57

square

#3751AA #AA378B #AA9037 #37AA57

split-complementary

#3751AA #AA5737 #8BAA37

monochromatic

#19254E #283B7C #3751AA #5670C8 #8497D7

Accessibility & contrast

On white

7.19

#3751AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#3751AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3751AA

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3751AA	#FFFFFF	#000000	##FFFFFF
##3751AA	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A5DAD

Deuteranopia (green-blind)

#0052A8

Tritanopia (blue-blind)

#006675

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3751aa;
/* rgb */ color: rgb(55, 81, 170);
/* oklch */ color: oklch(46.5% 0.146 268.0);

Tailwind

colors: {
  custom: {
    50: '#7b81c4',
    500: '#3751aa',
    950: '#000000',
  },
}

SCSS

$custom: #3751aa;
$custom-light: #7b81c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3751aa",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 170
  },
  "hsl": {
    "h": 226.435,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.46532,
    "c": 0.14587,
    "h": 268
  },
  "luminance": 0.09599
}

Semantic roles & 50–950 ramp

primary

#3751AA

secondary

#C1B17C

accent

#BB4DDB

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3751AA

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

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