#3740C5#3740C5

#3740C5 is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 45.7% C 0.203 H 272.2°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#3740C5
RGB	rgb(55, 64, 197)
HSL	hsl(236, 56%, 49%)
HSV	hsv(236, 72%, 77%)
CMYK	cmyk(72.1%, 67.5%, 0%, 22.7%)
CIE-LAB	lab(35.02, 40.85, -70.09)
CIE-LCH	lch(35.02, 81.13, 300.24°)
OKLab	oklab(45.66% 0.0079 -0.2027)
OKLCH	oklch(45.66% 0.203 272.2)
XYZ	xyz(13.4836, 8.5089, 53.7443)
Luminance	0.0851 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3740C5 #C5BC37

analogous

#3787C5 #3740C5 #7537C5

triadic

#3740C5 #C53740 #40C537

tetradic

#3740C5 #C53787 #C5BC37 #37C575

square

#3740C5 #C53787 #C5BC37 #37C575

split-complementary

#3740C5 #C57537 #87C537

monochromatic

#1C2165 #2A3095 #3740C5 #656CD4 #959AE1

Accessibility & contrast

On white

7.77

#3740C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3740C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3740C5

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3740C5	#FFFFFF	#000000	##FFFFFF
##3740C5	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C9

Deuteranopia (green-blind)

#004CC3

Tritanopia (blue-blind)

#00647D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3740c5;
/* rgb */ color: rgb(55, 64, 197);
/* oklch */ color: oklch(45.7% 0.203 272.2);

Tailwind

colors: {
  custom: {
    50: '#8275d8',
    500: '#3740c5',
    950: '#000000',
  },
}

SCSS

$custom: #3740c5;
$custom-light: #8275d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3740c5",
  "rgb": {
    "r": 55,
    "g": 64,
    "b": 197
  },
  "hsl": {
    "h": 236.197,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.45658,
    "c": 0.20282,
    "h": 272.2
  },
  "luminance": 0.0851
}

Semantic roles & 50–950 ramp

primary

#3740C5

secondary

#CDC98B

accent

#D648E0

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3740C5

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

Preview Lab → · Contrast checker → · Palette generator →