#3775DA#3775DA

#3775DA is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.5% C 0.168 H 259.7°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#3775DA
RGB	rgb(55, 117, 218)
HSL	hsl(217, 69%, 54%)
HSV	hsv(217, 75%, 85%)
CMYK	cmyk(74.8%, 46.3%, 0%, 14.5%)
CIE-LAB	lab(50.21, 14.89, -57.48)
CIE-LCH	lch(50.21, 59.38, 284.52°)
OKLab	oklab(57.55% -0.0298 -0.1649)
OKLCH	oklch(57.55% 0.168 259.7)
XYZ	xyz(20.5871, 18.5944, 68.8202)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775DA #DA9C37

analogous

#37C6DA #3775DA #4A37DA

triadic

#3775DA #DA3775 #75DA37

tetradic

#3775DA #DA37C6 #DA9C37 #37DA4A

square

#3775DA #DA37C6 #DA9C37 #37DA4A

split-complementary

#3775DA #DA4A37 #C6DA37

monochromatic

#183F7F #2158B3 #3775DA #6B99E4 #9EBCED

Accessibility & contrast

On white

4.45

#3775DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#3775DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3775DA

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775DA	#FFFFFF	#000000	##000000
##3775DA	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7FDE

Deuteranopia (green-blind)

#1570D8

Tritanopia (blue-blind)

#008D9D

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3775da;
/* rgb */ color: rgb(55, 117, 218);
/* oklch */ color: oklch(57.5% 0.168 259.7);

Tailwind

colors: {
  custom: {
    50: '#839ce6',
    500: '#3775da',
    950: '#000000',
  },
}

SCSS

$custom: #3775da;
$custom-light: #839ce6;
$custom-dark: #000000;

JSON

{
  "hex": "#3775da",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 218
  },
  "hsl": {
    "h": 217.178,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.57546,
    "c": 0.16761,
    "h": 259.7
  },
  "luminance": 0.18597
}

Semantic roles & 50–950 ramp

primary

#3775DA

secondary

#D9BF93

accent

#A93CEC

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3775DA

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

Preview Lab → · Contrast checker → · Palette generator →