#3755B9#3755B9

#3755B9 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.5% C 0.162 H 267.4°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#3755B9
RGB	rgb(55, 85, 185)
HSL	hsl(226, 54%, 47%)
HSV	hsv(226, 70%, 73%)
CMYK	cmyk(70.3%, 54.1%, 0%, 27.5%)
CIE-LAB	lab(39.26, 23.19, -56.15)
CIE-LCH	lch(39.26, 60.75, 292.44°)
OKLab	oklab(48.49% -0.0073 -0.1616)
OKLCH	oklch(48.49% 0.162 267.4)
XYZ	xyz(13.5780, 10.8106, 47.2606)
Luminance	0.1081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755B9 #B99B37

analogous

#3796B9 #3755B9 #5A37B9

triadic

#3755B9 #B93755 #55B937

tetradic

#3755B9 #B93796 #B99B37 #37B95A

square

#3755B9 #B93796 #B99B37 #37B95A

split-complementary

#3755B9 #B95A37 #96B937

monochromatic

#1B2A5B #293F8A #3755B9 #5E78CF #8DA0DD

Accessibility & contrast

On white

6.64

#3755B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3755B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755B9

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755B9	#FFFFFF	#000000	##FFFFFF
##3755B9	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0763BC

Deuteranopia (green-blind)

#0057B7

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3755b9;
/* rgb */ color: rgb(55, 85, 185);
/* oklch */ color: oklch(48.5% 0.162 267.4);

Tailwind

colors: {
  custom: {
    50: '#7e84cf',
    500: '#3755b9',
    950: '#000000',
  },
}

SCSS

$custom: #3755b9;
$custom-light: #7e84cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3755b9",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 185
  },
  "hsl": {
    "h": 226.154,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.48493,
    "c": 0.16172,
    "h": 267.4
  },
  "luminance": 0.10812
}

Semantic roles & 50–950 ramp

primary

#3755B9

secondary

#C8B884

accent

#BC4ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3755B9

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

Preview Lab → · Contrast checker → · Palette generator →