#3775D7#3775D7

#3775D7 is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.3% C 0.164 H 259.3°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3775D7
RGB	rgb(55, 117, 215)
HSL	hsl(217, 67%, 53%)
HSV	hsv(217, 74%, 84%)
CMYK	cmyk(74.4%, 45.6%, 0%, 15.7%)
CIE-LAB	lab(50.02, 13.79, -56.08)
CIE-LCH	lch(50.02, 57.75, 283.81°)
OKLab	oklab(57.34% -0.0303 -0.1608)
OKLCH	oklch(57.34% 0.164 259.3)
XYZ	xyz(20.1981, 18.4388, 66.7714)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775D7 #D79937

analogous

#37C5D7 #3775D7 #4937D7

triadic

#3775D7 #D73775 #75D737

tetradic

#3775D7 #D737C5 #D79937 #37D749

square

#3775D7 #D737C5 #D79937 #37D749

split-complementary

#3775D7 #D74937 #C5D737

monochromatic

#193F7B #2359AE #3775D7 #6A98E1 #9DBBEB

Accessibility & contrast

On white

4.48

#3775D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#3775D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3775D7

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775D7	#FFFFFF	#000000	##000000
##3775D7	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#427FDB

Deuteranopia (green-blind)

#1D70D5

Tritanopia (blue-blind)

#008C9B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3775d7;
/* rgb */ color: rgb(55, 117, 215);
/* oklch */ color: oklch(57.3% 0.164 259.3);

Tailwind

colors: {
  custom: {
    50: '#839ce4',
    500: '#3775d7',
    950: '#000000',
  },
}

SCSS

$custom: #3775d7;
$custom-light: #839ce4;
$custom-dark: #000000;

JSON

{
  "hex": "#3775d7",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 215
  },
  "hsl": {
    "h": 216.75,
    "s": 66.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.57343,
    "c": 0.16365,
    "h": 259.3
  },
  "luminance": 0.18441
}

Semantic roles & 50–950 ramp

primary

#3775D7

secondary

#D7BD92

accent

#A73EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3775D7

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

Preview Lab → · Contrast checker → · Palette generator →