#3751C4#3751C4

#3751C4 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.6% C 0.182 H 268.9°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#3751C4
RGB	rgb(55, 81, 196)
HSL	hsl(229, 56%, 49%)
HSV	hsv(229, 72%, 77%)
CMYK	cmyk(71.9%, 58.7%, 0%, 23.1%)
CIE-LAB	lab(39.04, 29.80, -62.94)
CIE-LCH	lch(39.04, 69.64, 295.34°)
OKLab	oklab(48.59% -0.0036 -0.1816)
OKLCH	oklch(48.59% 0.182 268.9)
XYZ	xyz(14.4784, 10.6811, 53.5125)
Luminance	0.1068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3751C4 #C4AA37

analogous

#3798C4 #3751C4 #6437C4

triadic

#3751C4 #C43751 #51C437

tetradic

#3751C4 #C43798 #C4AA37 #37C464

square

#3751C4 #C43798 #C4AA37 #37C464

split-complementary

#3751C4 #C46437 #98C437

monochromatic

#1C2A64 #2A3D94 #3751C4 #6579D4 #94A2E1

Accessibility & contrast

On white

6.70

#3751C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3751C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3751C4

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3751C4	#FFFFFF	#000000	##FFFFFF
##3751C4	1.00	6.70	3.14	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C8

Deuteranopia (green-blind)

#0056C2

Tritanopia (blue-blind)

#006E82

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3751c4;
/* rgb */ color: rgb(55, 81, 196);
/* oklch */ color: oklch(48.6% 0.182 268.9);

Tailwind

colors: {
  custom: {
    50: '#8181d7',
    500: '#3751c4',
    950: '#000000',
  },
}

SCSS

$custom: #3751c4;
$custom-light: #8181d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3751c4",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 196
  },
  "hsl": {
    "h": 228.936,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.48587,
    "c": 0.18161,
    "h": 268.9
  },
  "luminance": 0.10683
}

Semantic roles & 50–950 ramp

primary

#3751C4

secondary

#CCC08B

accent

#C448DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3751C4

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

Preview Lab → · Contrast checker → · Palette generator →