#3774DD#3774DD

#3774DD is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.5% C 0.173 H 260.5°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3774DD
RGB	rgb(55, 116, 221)
HSL	hsl(218, 71%, 54%)
HSV	hsv(218, 75%, 87%)
CMYK	cmyk(75.1%, 47.5%, 0%, 13.3%)
CIE-LAB	lab(50.12, 16.62, -59.32)
CIE-LCH	lch(50.12, 61.61, 285.66°)
OKLab	oklab(57.54% -0.0286 -0.1703)
OKLCH	oklch(57.54% 0.173 260.5)
XYZ	xyz(20.8674, 18.5211, 70.8677)
Luminance	0.1852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3774DD #DDA037

analogous

#37C7DD #3774DD #4D37DD

triadic

#3774DD #DD3774 #74DD37

tetradic

#3774DD #DD37C7 #DDA037 #37DD4D

square

#3774DD #DD37C7 #DDA037 #37DD4D

split-complementary

#3774DD #DD4D37 #C7DD37

monochromatic

#163E83 #1F57B8 #3774DD #6B98E6 #A0BDEF

Accessibility & contrast

On white

4.46

#3774DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#3774DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3774DD

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3774DD	#FFFFFF	#000000	##000000
##3774DD	1.00	4.46	4.70	4.70
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397FE1

Deuteranopia (green-blind)

#0070DB

Tritanopia (blue-blind)

#008D9E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3774dd;
/* rgb */ color: rgb(55, 116, 221);
/* oklch */ color: oklch(57.5% 0.173 260.5);

Tailwind

colors: {
  custom: {
    50: '#849be8',
    500: '#3774dd',
    950: '#000000',
  },
}

SCSS

$custom: #3774dd;
$custom-light: #849be8;
$custom-dark: #000000;

JSON

{
  "hex": "#3774dd",
  "rgb": {
    "r": 55,
    "g": 116,
    "b": 221
  },
  "hsl": {
    "h": 217.952,
    "s": 70.94,
    "l": 54.118
  },
  "oklch": {
    "l": 0.57539,
    "c": 0.17273,
    "h": 260.5
  },
  "luminance": 0.18523
}

Semantic roles & 50–950 ramp

primary

#3774DD

secondary

#DBC195

accent

#AC3AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3774DD

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

Preview Lab → · Contrast checker → · Palette generator →