#3750C7#3750C7

#3750C7 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.6% C 0.187 H 269.1°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#3750C7
RGB	rgb(55, 80, 199)
HSL	hsl(230, 57%, 50%)
HSV	hsv(230, 72%, 78%)
CMYK	cmyk(72.4%, 59.8%, 0%, 22%)
CIE-LAB	lab(39.02, 31.53, -64.71)
CIE-LCH	lch(39.02, 71.98, 295.98°)
OKLab	oklab(48.65% -0.0028 -0.1868)
OKLCH	oklch(48.65% 0.187 269.1)
XYZ	xyz(14.7495, 10.6715, 55.3042)
Luminance	0.1067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3750C7 #C7AE37

analogous

#3798C7 #3750C7 #6637C7

triadic

#3750C7 #C73750 #50C737

tetradic

#3750C7 #C73798 #C7AE37 #37C766

square

#3750C7 #C73798 #C7AE37 #37C766

split-complementary

#3750C7 #C76637 #98C737

monochromatic

#1C2967 #2A3D97 #3750C7 #667AD5 #96A3E2

Accessibility & contrast

On white

6.70

#3750C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3750C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3750C7

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3750C7	#FFFFFF	#000000	##FFFFFF
##3750C7	1.00	6.70	3.13	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CB

Deuteranopia (green-blind)

#0055C5

Tritanopia (blue-blind)

#006E84

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3750c7;
/* rgb */ color: rgb(55, 80, 199);
/* oklch */ color: oklch(48.6% 0.187 269.1);

Tailwind

colors: {
  custom: {
    50: '#8180d9',
    500: '#3750c7',
    950: '#000000',
  },
}

SCSS

$custom: #3750c7;
$custom-light: #8180d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3750c7",
  "rgb": {
    "r": 55,
    "g": 80,
    "b": 199
  },
  "hsl": {
    "h": 229.583,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.48649,
    "c": 0.1868,
    "h": 269.1
  },
  "luminance": 0.10673
}

Semantic roles & 50–950 ramp

primary

#3750C7

secondary

#CDC28C

accent

#C648E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3750C7

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

Preview Lab → · Contrast checker → · Palette generator →