#2578C5#2578C5

#2578C5 is a mid, vivid cyan. Relative luminance 0.179; OKLCH L 56.3% C 0.142 H 250.8°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#2578C5
RGB	rgb(37, 120, 197)
HSL	hsl(209, 68%, 46%)
HSV	hsv(209, 81%, 77%)
CMYK	cmyk(81.2%, 39.1%, 0%, 22.7%)
CIE-LAB	lab(49.32, 3.19, -46.98)
CIE-LCH	lch(49.32, 47.09, 273.88°)
OKLab	oklab(56.31% -0.0468 -0.1342)
OKLCH	oklch(56.31% 0.142 250.8)
XYZ	xyz(17.5536, 17.8553, 55.3338)
Luminance	0.1786 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2578C5 #C57225

analogous

#25C5C2 #2578C5 #2528C5

triadic

#2578C5 #C52578 #78C525

tetradic

#2578C5 #C225C5 #C57225 #28C525

square

#2578C5 #C225C5 #C57225 #28C525

split-complementary

#2578C5 #C52528 #C5C225

monochromatic

#12395E #1B5991 #2578C5 #4A96DD #7EB4E7

Accessibility & contrast

On white

4.59

#2578C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#2578C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #2578C5

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2578C5	#FFFFFF	#000000	##FFFFFF
##2578C5	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#537DC8

Deuteranopia (green-blind)

#396FC3

Tritanopia (blue-blind)

#008A95

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #2578c5;
/* rgb */ color: rgb(37, 120, 197);
/* oklch */ color: oklch(56.3% 0.142 250.8);

Tailwind

colors: {
  custom: {
    50: '#799ed7',
    500: '#2578c5',
    950: '#000000',
  },
}

SCSS

$custom: #2578c5;
$custom-light: #799ed7;
$custom-dark: #000000;

JSON

{
  "hex": "#2578c5",
  "rgb": {
    "r": 37,
    "g": 120,
    "b": 197
  },
  "hsl": {
    "h": 208.875,
    "s": 68.376,
    "l": 45.882
  },
  "oklch": {
    "l": 0.56312,
    "c": 0.14213,
    "h": 250.8
  },
  "luminance": 0.17857
}

Semantic roles & 50–950 ramp

primary

#2578C5

secondary

#CFA177

accent

#913DEB

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #2578C5

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

Preview Lab → · Contrast checker → · Palette generator →