#2578C4#2578C4

#2578C4 is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.3% C 0.141 H 250.5°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#2578C4
RGB	rgb(37, 120, 196)
HSL	hsl(209, 68%, 46%)
HSV	hsv(209, 81%, 77%)
CMYK	cmyk(81.1%, 38.8%, 0%, 23.1%)
CIE-LAB	lab(49.26, 2.81, -46.50)
CIE-LCH	lch(49.26, 46.58, 273.46°)
OKLab	oklab(56.25% -0.047 -0.1328)
OKLCH	oklch(56.25% 0.141 250.5)
XYZ	xyz(17.4394, 17.8096, 54.7323)
Luminance	0.1781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2578C4 #C47125

analogous

#25C4C0 #2578C4 #2529C4

triadic

#2578C4 #C42578 #78C425

tetradic

#2578C4 #C025C4 #C47125 #29C425

square

#2578C4 #C025C4 #C47125 #29C425

split-complementary

#2578C4 #C42529 #C4C025

monochromatic

#12395D #1B5891 #2578C4 #4996DD #7DB4E6

Accessibility & contrast

On white

4.60

#2578C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#2578C4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #2578C4

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2578C4	#FFFFFF	#000000	##FFFFFF
##2578C4	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#537DC7

Deuteranopia (green-blind)

#3A6FC3

Tritanopia (blue-blind)

#008A94

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #2578c4;
/* rgb */ color: rgb(37, 120, 196);
/* oklch */ color: oklch(56.3% 0.141 250.5);

Tailwind

colors: {
  custom: {
    50: '#799ed6',
    500: '#2578c4',
    950: '#000000',
  },
}

SCSS

$custom: #2578c4;
$custom-light: #799ed6;
$custom-dark: #000000;

JSON

{
  "hex": "#2578c4",
  "rgb": {
    "r": 37,
    "g": 120,
    "b": 196
  },
  "hsl": {
    "h": 208.679,
    "s": 68.24,
    "l": 45.686
  },
  "oklch": {
    "l": 0.56251,
    "c": 0.14087,
    "h": 250.5
  },
  "luminance": 0.17812
}

Semantic roles & 50–950 ramp

primary

#2578C4

secondary

#CFA076

accent

#903DEB

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #2578C4

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

Preview Lab → · Contrast checker → · Palette generator →