#3478CC#3478CC

#3478CC is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 57.2% C 0.147 H 255.4°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3478CC
RGB	rgb(52, 120, 204)
HSL	hsl(213, 60%, 50%)
HSV	hsv(213, 75%, 80%)
CMYK	cmyk(74.5%, 41.2%, 0%, 20%)
CIE-LAB	lab(50.12, 7.49, -49.68)
CIE-LCH	lch(50.12, 50.24, 278.57°)
OKLab	oklab(57.18% -0.037 -0.142)
OKLCH	oklch(57.18% 0.147 255.4)
XYZ	xyz(19.0277, 18.5205, 59.6870)
Luminance	0.1852 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3478CC #CC8834

analogous

#34C4CC #3478CC #3C34CC

triadic

#3478CC #CC3478 #78CC34

tetradic

#3478CC #CC34C4 #CC8834 #34CC3C

square

#3478CC #CC34C4 #CC8834 #34CC3C

split-complementary

#3478CC #CC3C34 #C4CC34

monochromatic

#1B3F6B #275B9C #3478CC #6599D8 #96B9E5

Accessibility & contrast

On white

4.46

#3478CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#3478CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3478CC

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3478CC	#FFFFFF	#000000	##000000
##3478CC	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)

#507FCF

Deuteranopia (green-blind)

#3671CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3478cc;
/* rgb */ color: rgb(52, 120, 204);
/* oklch */ color: oklch(57.2% 0.147 255.4);

Tailwind

colors: {
  custom: {
    50: '#7f9edc',
    500: '#3478cc',
    950: '#000000',
  },
}

SCSS

$custom: #3478cc;
$custom-light: #7f9edc;
$custom-dark: #000000;

JSON

{
  "hex": "#3478cc",
  "rgb": {
    "r": 52,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 213.158,
    "s": 59.843,
    "l": 50.196
  },
  "oklch": {
    "l": 0.57181,
    "c": 0.14671,
    "h": 255.4
  },
  "luminance": 0.18523
}

Semantic roles & 50–950 ramp

primary

#3478CC

secondary

#D0B18C

accent

#9C45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3478CC

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

Preview Lab → · Contrast checker → · Palette generator →