#3755B8#3755B8

#3755B8 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.4% C 0.160 H 267.4°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3755B8
RGB	rgb(55, 85, 184)
HSL	hsl(226, 54%, 47%)
HSV	hsv(226, 70%, 72%)
CMYK	cmyk(70.1%, 53.8%, 0%, 27.8%)
CIE-LAB	lab(39.19, 22.82, -55.68)
CIE-LCH	lch(39.19, 60.18, 292.29°)
OKLab	oklab(48.42% -0.0073 -0.1602)
OKLCH	oklch(48.42% 0.16 267.4)
XYZ	xyz(13.4728, 10.7686, 46.7066)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755B8 #B89A37

analogous

#3795B8 #3755B8 #5A37B8

triadic

#3755B8 #B83755 #55B837

tetradic

#3755B8 #B83795 #B89A37 #37B85A

square

#3755B8 #B83795 #B89A37 #37B85A

split-complementary

#3755B8 #B85A37 #95B837

monochromatic

#1B295A #293F89 #3755B8 #5D78CF #8D9FDD

Accessibility & contrast

On white

6.66

#3755B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3755B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755B8

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755B8	#FFFFFF	#000000	##FFFFFF
##3755B8	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)

#0B62BB

Deuteranopia (green-blind)

#0057B6

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3755b8;
/* rgb */ color: rgb(55, 85, 184);
/* oklch */ color: oklch(48.4% 0.160 267.4);

Tailwind

colors: {
  custom: {
    50: '#7e84ce',
    500: '#3755b8',
    950: '#000000',
  },
}

SCSS

$custom: #3755b8;
$custom-light: #7e84ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3755b8",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 184
  },
  "hsl": {
    "h": 226.047,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.48416,
    "c": 0.16035,
    "h": 267.4
  },
  "luminance": 0.1077
}

Semantic roles & 50–950 ramp

primary

#3755B8

secondary

#C7B884

accent

#BB4ADD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3755B8

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

Preview Lab → · Contrast checker → · Palette generator →