#3474DD#3474DD

#3474DD is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.4% C 0.174 H 259.9°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3474DD
RGB	rgb(52, 116, 221)
HSL	hsl(217, 71%, 54%)
HSV	hsv(217, 76%, 87%)
CMYK	cmyk(76.5%, 47.5%, 0%, 13.3%)
CIE-LAB	lab(50.02, 16.28, -59.48)
CIE-LCH	lch(50.02, 61.67, 285.30°)
OKLab	oklab(57.44% -0.0305 -0.1709)
OKLCH	oklch(57.44% 0.174 259.9)
XYZ	xyz(20.7080, 18.4389, 70.8603)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3474DD #DD9D34

analogous

#34C8DD #3474DD #4834DD

triadic

#3474DD #DD3474 #74DD34

tetradic

#3474DD #DD34C8 #DD9D34 #34DD48

square

#3474DD #DD34C8 #DD9D34 #34DD48

split-complementary

#3474DD #DD4834 #C8DD34

monochromatic

#163E81 #1E58B5 #3474DD #6898E6 #9DBCEF

Accessibility & contrast

On white

4.48

#3474DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#3474DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3474DD

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3474DD	#FFFFFF	#000000	##000000
##3474DD	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)

#397FE1

Deuteranopia (green-blind)

#0070DB

Tritanopia (blue-blind)

#008D9E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3474dd;
/* rgb */ color: rgb(52, 116, 221);
/* oklch */ color: oklch(57.4% 0.174 259.9);

Tailwind

colors: {
  custom: {
    50: '#839be8',
    500: '#3474dd',
    950: '#000000',
  },
}

SCSS

$custom: #3474dd;
$custom-light: #839be8;
$custom-dark: #000000;

JSON

{
  "hex": "#3474dd",
  "rgb": {
    "r": 52,
    "g": 116,
    "b": 221
  },
  "hsl": {
    "h": 217.278,
    "s": 71.308,
    "l": 53.529
  },
  "oklch": {
    "l": 0.57436,
    "c": 0.17358,
    "h": 259.9
  },
  "luminance": 0.18441
}

Semantic roles & 50–950 ramp

primary

#3474DD

secondary

#DBBF92

accent

#AA3AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3474DD

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

Preview Lab → · Contrast checker → · Palette generator →