#3755B3#3755B3

#3755B3 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.0% C 0.153 H 267.1°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#3755B3
RGB	rgb(55, 85, 179)
HSL	hsl(225, 53%, 46%)
HSV	hsv(225, 69%, 70%)
CMYK	cmyk(69.3%, 52.5%, 0%, 29.8%)
CIE-LAB	lab(38.83, 20.98, -53.32)
CIE-LCH	lch(38.83, 57.30, 291.48°)
OKLab	oklab(48.04% -0.0077 -0.1532)
OKLCH	oklch(48.04% 0.153 267.1)
XYZ	xyz(12.9579, 10.5626, 43.9950)
Luminance	0.1056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755B3 #B39537

analogous

#3793B3 #3755B3 #5737B3

triadic

#3755B3 #B33755 #55B337

tetradic

#3755B3 #B33793 #B39537 #37B357

square

#3755B3 #B33793 #B39537 #37B357

split-complementary

#3755B3 #B35737 #93B337

monochromatic

#1A2955 #293F84 #3755B3 #5B76CD #8A9DDB

Accessibility & contrast

On white

6.75

#3755B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3755B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755B3

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755B3	#FFFFFF	#000000	##FFFFFF
##3755B3	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1861B6

Deuteranopia (green-blind)

#0056B1

Tritanopia (blue-blind)

#006B7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3755b3;
/* rgb */ color: rgb(55, 85, 179);
/* oklch */ color: oklch(48.0% 0.153 267.1);

Tailwind

colors: {
  custom: {
    50: '#7d84ca',
    500: '#3755b3',
    950: '#000000',
  },
}

SCSS

$custom: #3755b3;
$custom-light: #7d84ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3755b3",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 179
  },
  "hsl": {
    "h": 225.484,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.48036,
    "c": 0.15341,
    "h": 267.1
  },
  "luminance": 0.10564
}

Semantic roles & 50–950 ramp

primary

#3755B3

secondary

#C5B581

accent

#B94BDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3755B3

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

Preview Lab → · Contrast checker → · Palette generator →