#3751C0#3751C0

#3751C0 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.3% C 0.176 H 268.8°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#3751C0
RGB	rgb(55, 81, 192)
HSL	hsl(229, 55%, 48%)
HSV	hsv(229, 71%, 75%)
CMYK	cmyk(71.4%, 57.8%, 0%, 24.7%)
CIE-LAB	lab(38.73, 28.35, -61.11)
CIE-LCH	lch(38.73, 67.37, 294.88°)
OKLab	oklab(48.26% -0.0037 -0.1762)
OKLCH	oklch(48.26% 0.176 268.8)
XYZ	xyz(14.0291, 10.5014, 51.1466)
Luminance	0.1050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3751C0 #C0A637

analogous

#3795C0 #3751C0 #6137C0

triadic

#3751C0 #C03751 #51C037

tetradic

#3751C0 #C03795 #C0A637 #37C061

square

#3751C0 #C03795 #C0A637 #37C061

split-complementary

#3751C0 #C06137 #95C037

monochromatic

#1C2961 #293D90 #3751C0 #6277D2 #92A1E0

Accessibility & contrast

On white

6.77

#3751C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#3751C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3751C0

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3751C0	#FFFFFF	#000000	##FFFFFF
##3751C0	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C4

Deuteranopia (green-blind)

#0055BE

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3751c0;
/* rgb */ color: rgb(55, 81, 192);
/* oklch */ color: oklch(48.3% 0.176 268.8);

Tailwind

colors: {
  custom: {
    50: '#8081d4',
    500: '#3751c0',
    950: '#000000',
  },
}

SCSS

$custom: #3751c0;
$custom-light: #8081d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3751c0",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 192
  },
  "hsl": {
    "h": 228.613,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.48258,
    "c": 0.17624,
    "h": 268.8
  },
  "luminance": 0.10503
}

Semantic roles & 50–950 ramp

primary

#3751C0

secondary

#CBBE88

accent

#C249DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3751C0

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

Preview Lab → · Contrast checker → · Palette generator →