#3475DD#3475DD

#3475DD is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.6% C 0.172 H 259.5°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3475DD
RGB	rgb(52, 117, 221)
HSL	hsl(217, 71%, 54%)
HSV	hsv(217, 76%, 87%)
CMYK	cmyk(76.5%, 47.1%, 0%, 13.3%)
CIE-LAB	lab(50.30, 15.65, -59.04)
CIE-LCH	lch(50.30, 61.08, 284.85°)
OKLab	oklab(57.65% -0.0313 -0.1695)
OKLCH	oklch(57.65% 0.172 259.5)
XYZ	xyz(20.8239, 18.6707, 70.8989)
Luminance	0.1867 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3475DD #DD9C34

analogous

#34C9DD #3475DD #4734DD

triadic

#3475DD #DD3475 #75DD34

tetradic

#3475DD #DD34C9 #DD9C34 #34DD47

square

#3475DD #DD34C9 #DD9C34 #34DD47

split-complementary

#3475DD #DD4734 #C9DD34

monochromatic

#163F81 #1E58B5 #3475DD #6899E6 #9DBCEF

Accessibility & contrast

On white

4.44

#3475DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3475DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3475DD

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3475DD	#FFFFFF	#000000	##000000
##3475DD	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B80E1

Deuteranopia (green-blind)

#0370DB

Tritanopia (blue-blind)

#008E9E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3475dd;
/* rgb */ color: rgb(52, 117, 221);
/* oklch */ color: oklch(57.6% 0.172 259.5);

Tailwind

colors: {
  custom: {
    50: '#839ce8',
    500: '#3475dd',
    950: '#000000',
  },
}

SCSS

$custom: #3475dd;
$custom-light: #839ce8;
$custom-dark: #000000;

JSON

{
  "hex": "#3475dd",
  "rgb": {
    "r": 52,
    "g": 117,
    "b": 221
  },
  "hsl": {
    "h": 216.923,
    "s": 71.308,
    "l": 53.529
  },
  "oklch": {
    "l": 0.57648,
    "c": 0.17242,
    "h": 259.5
  },
  "luminance": 0.18673
}

Semantic roles & 50–950 ramp

primary

#3475DD

secondary

#DBBF92

accent

#A93AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3475DD

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

Preview Lab → · Contrast checker → · Palette generator →