#2578A4#2578A4

#2578A4 is a mid, moderate cyan. Relative luminance 0.165; OKLCH L 54.4% C 0.103 H 236.8°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#2578A4
RGB	rgb(37, 120, 164)
HSL	hsl(201, 63%, 39%)
HSV	hsv(201, 77%, 64%)
CMYK	cmyk(77.4%, 26.8%, 0%, 35.7%)
CIE-LAB	lab(47.63, -9.10, -30.55)
CIE-LCH	lch(47.63, 31.88, 253.42°)
OKLab	oklab(54.43% -0.0565 -0.0862)
OKLCH	oklch(54.43% 0.103 236.8)
XYZ	xyz(14.1776, 16.5049, 37.5533)
Luminance	0.1651 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2578A4 #A45125

analogous

#25A490 #2578A4 #2539A4

triadic

#2578A4 #A42578 #78A425

tetradic

#2578A4 #9025A4 #A45125 #39A425

square

#2578A4 #9025A4 #A45125 #39A425

split-complementary

#2578A4 #A42539 #A49025

monochromatic

#0E2F40 #1A5372 #2578A4 #359BD1 #67B4DD

Accessibility & contrast

On white

4.88

#2578A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#2578A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2578A4

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2578A4	#FFFFFF	#000000	##FFFFFF
##2578A4	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6378A6

Deuteranopia (green-blind)

#526CA3

Tritanopia (blue-blind)

#008387

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #2578a4;
/* rgb */ color: rgb(37, 120, 164);
/* oklch */ color: oklch(54.4% 0.103 236.8);

Tailwind

colors: {
  custom: {
    50: '#739ebf',
    500: '#2578a4',
    950: '#000000',
  },
}

SCSS

$custom: #2578a4;
$custom-light: #739ebf;
$custom-dark: #000000;

JSON

{
  "hex": "#2578a4",
  "rgb": {
    "r": 37,
    "g": 120,
    "b": 164
  },
  "hsl": {
    "h": 200.787,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.54427,
    "c": 0.10311,
    "h": 236.8
  },
  "luminance": 0.16507
}

Semantic roles & 50–950 ramp

primary

#2578A4

secondary

#C28462

accent

#7B42E6

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #2578A4

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

Preview Lab → · Contrast checker → · Palette generator →