#3478CB#3478CB

#3478CB is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 57.1% C 0.145 H 255.2°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3478CB
RGB	rgb(52, 120, 203)
HSL	hsl(213, 59%, 50%)
HSV	hsv(213, 74%, 80%)
CMYK	cmyk(74.4%, 40.9%, 0%, 20.4%)
CIE-LAB	lab(50.06, 7.12, -49.20)
CIE-LCH	lch(50.06, 49.71, 278.24°)
OKLab	oklab(57.12% -0.0372 -0.1406)
OKLCH	oklch(57.12% 0.145 255.2)
XYZ	xyz(18.9081, 18.4727, 59.0574)
Luminance	0.1847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3478CB #CB8734

analogous

#34C4CB #3478CB #3B34CB

triadic

#3478CB #CB3478 #78CB34

tetradic

#3478CB #CB34C4 #CB8734 #34CB3B

square

#3478CB #CB34C4 #CB8734 #34CB3B

split-complementary

#3478CB #CB3B34 #C4CB34

monochromatic

#1B3E6A #285B9A #3478CB #6598D7 #95B9E4

Accessibility & contrast

On white

4.47

#3478CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#3478CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3478CB

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3478CB	#FFFFFF	#000000	##000000
##3478CB	1.00	4.47	4.70	4.70
#FFFFFF	4.47	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)

#507FCE

Deuteranopia (green-blind)

#3771C9

Tritanopia (blue-blind)

#008C97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3478cb;
/* rgb */ color: rgb(52, 120, 203);
/* oklch */ color: oklch(57.1% 0.145 255.2);

Tailwind

colors: {
  custom: {
    50: '#7f9edb',
    500: '#3478cb',
    950: '#000000',
  },
}

SCSS

$custom: #3478cb;
$custom-light: #7f9edb;
$custom-dark: #000000;

JSON

{
  "hex": "#3478cb",
  "rgb": {
    "r": 52,
    "g": 120,
    "b": 203
  },
  "hsl": {
    "h": 212.98,
    "s": 59.216,
    "l": 50
  },
  "oklch": {
    "l": 0.57118,
    "c": 0.14541,
    "h": 255.2
  },
  "luminance": 0.18475
}

Semantic roles & 50–950 ramp

primary

#3478CB

secondary

#CFB18C

accent

#9C45E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3478CB

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

Preview Lab → · Contrast checker → · Palette generator →