#3751C6#3751C6

#3751C6 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.8% C 0.184 H 268.9°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3751C6
RGB	rgb(55, 81, 198)
HSL	hsl(229, 57%, 50%)
HSV	hsv(229, 72%, 78%)
CMYK	cmyk(72.2%, 59.1%, 0%, 22.4%)
CIE-LAB	lab(39.20, 30.52, -63.85)
CIE-LCH	lch(39.20, 70.77, 295.55°)
OKLab	oklab(48.75% -0.0036 -0.1842)
OKLCH	oklch(48.75% 0.184 268.9)
XYZ	xyz(14.7075, 10.7728, 54.7194)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3751C6 #C6AC37

analogous

#3799C6 #3751C6 #6537C6

triadic

#3751C6 #C63751 #51C637

tetradic

#3751C6 #C63799 #C6AC37 #37C665

square

#3751C6 #C63799 #C6AC37 #37C665

split-complementary

#3751C6 #C66537 #99C637

monochromatic

#1C2A66 #2A3D96 #3751C6 #667AD4 #96A3E2

Accessibility & contrast

On white

6.66

#3751C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3751C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3751C6

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3751C6	#FFFFFF	#000000	##FFFFFF
##3751C6	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CA

Deuteranopia (green-blind)

#0056C4

Tritanopia (blue-blind)

#006E83

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3751c6;
/* rgb */ color: rgb(55, 81, 198);
/* oklch */ color: oklch(48.8% 0.184 268.9);

Tailwind

colors: {
  custom: {
    50: '#8181d8',
    500: '#3751c6',
    950: '#000000',
  },
}

SCSS

$custom: #3751c6;
$custom-light: #8181d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3751c6",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 198
  },
  "hsl": {
    "h": 229.091,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.48753,
    "c": 0.18426,
    "h": 268.9
  },
  "luminance": 0.10774
}

Semantic roles & 50–950 ramp

primary

#3751C6

secondary

#CDC18C

accent

#C448E0

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3751C6

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

Preview Lab → · Contrast checker → · Palette generator →