#3775D3#3775D3

#3775D3 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.1% C 0.158 H 258.7°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3775D3
RGB	rgb(55, 117, 211)
HSL	hsl(216, 64%, 52%)
HSV	hsv(216, 74%, 83%)
CMYK	cmyk(73.9%, 44.5%, 0%, 17.3%)
CIE-LAB	lab(49.78, 12.31, -54.20)
CIE-LCH	lch(49.78, 55.59, 282.80°)
OKLab	oklab(57.08% -0.031 -0.1553)
OKLCH	oklch(57.08% 0.158 258.7)
XYZ	xyz(19.6904, 18.2358, 64.0975)
Luminance	0.1824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775D3 #D39537

analogous

#37C3D3 #3775D3 #4737D3

triadic

#3775D3 #D33775 #75D337

tetradic

#3775D3 #D337C3 #D39537 #37D347

square

#3775D3 #D337C3 #D39537 #37D347

split-complementary

#3775D3 #D34737 #C3D337

monochromatic

#1A3E76 #2559A8 #3775D3 #6998DE #9BBAE9

Accessibility & contrast

On white

4.52

#3775D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3775D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3775D3

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775D3	#FFFFFF	#000000	##000000
##3775D3	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#457ED7

Deuteranopia (green-blind)

#2570D1

Tritanopia (blue-blind)

#008B9A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3775d3;
/* rgb */ color: rgb(55, 117, 211);
/* oklch */ color: oklch(57.1% 0.158 258.7);

Tailwind

colors: {
  custom: {
    50: '#829ce1',
    500: '#3775d3',
    950: '#000000',
  },
}

SCSS

$custom: #3775d3;
$custom-light: #829ce1;
$custom-dark: #000000;

JSON

{
  "hex": "#3775d3",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 211
  },
  "hsl": {
    "h": 216.154,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57077,
    "c": 0.15835,
    "h": 258.7
  },
  "luminance": 0.18238
}

Semantic roles & 50–950 ramp

primary

#3775D3

secondary

#D5BA91

accent

#A541E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3775D3

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

Preview Lab → · Contrast checker → · Palette generator →