#3A78CB#3A78CB

#3A78CB is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.3% C 0.143 H 256.6°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3A78CB
RGB	rgb(58, 120, 203)
HSL	hsl(214, 58%, 51%)
HSV	hsv(214, 71%, 80%)
CMYK	cmyk(71.4%, 40.9%, 0%, 20.4%)
CIE-LAB	lab(50.27, 7.93, -48.87)
CIE-LCH	lch(50.27, 49.51, 279.22°)
OKLab	oklab(57.33% -0.0332 -0.1395)
OKLCH	oklch(57.33% 0.143 256.6)
XYZ	xyz(19.2369, 18.6422, 59.0728)
Luminance	0.1864 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A78CB #CB8D3A

analogous

#3AC0CB #3A78CB #443ACB

triadic

#3A78CB #CB3A78 #78CB3A

tetradic

#3A78CB #CB3AC0 #CB8D3A #3ACB44

square

#3A78CB #CB3AC0 #CB8D3A #3ACB44

split-complementary

#3A78CB #CB443A #C0CB3A

monochromatic

#1D3F6E #2A5B9E #3A78CB #6A99D8 #9BBAE5

Accessibility & contrast

On white

4.44

#3A78CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3A78CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3A78CB

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A78CB	#FFFFFF	#000000	##000000
##3A78CB	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)

#517FCE

Deuteranopia (green-blind)

#3971C9

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3a78cb;
/* rgb */ color: rgb(58, 120, 203);
/* oklch */ color: oklch(57.3% 0.143 256.6);

Tailwind

colors: {
  custom: {
    50: '#829edb',
    500: '#3a78cb',
    950: '#000000',
  },
}

SCSS

$custom: #3a78cb;
$custom-light: #829edb;
$custom-dark: #000000;

JSON

{
  "hex": "#3a78cb",
  "rgb": {
    "r": 58,
    "g": 120,
    "b": 203
  },
  "hsl": {
    "h": 214.345,
    "s": 58.233,
    "l": 51.176
  },
  "oklch": {
    "l": 0.57331,
    "c": 0.14342,
    "h": 256.6
  },
  "luminance": 0.18644
}

Semantic roles & 50–950 ramp

primary

#3A78CB

secondary

#D0B590

accent

#9F46E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A78CB

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

Preview Lab → · Contrast checker → · Palette generator →