#2578BC#2578BC

#2578BC is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.131 H 248.0°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#2578BC
RGB	rgb(37, 120, 188)
HSL	hsl(207, 67%, 44%)
HSV	hsv(207, 80%, 74%)
CMYK	cmyk(80.3%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(48.83, -0.21, -42.59)
CIE-LCH	lch(48.83, 42.59, 269.72°)
OKLab	oklab(55.77% -0.0491 -0.1213)
OKLCH	oklch(55.77% 0.131 248)
XYZ	xyz(16.5530, 17.4551, 50.0639)
Luminance	0.1746 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2578BC #BC6925

analogous

#25BCB5 #2578BC #252DBC

triadic

#2578BC #BC2578 #78BC25

tetradic

#2578BC #B525BC #BC6925 #2DBC25

square

#2578BC #B525BC #BC6925 #2DBC25

split-complementary

#2578BC #BC252D #BCB525

monochromatic

#113756 #1B5789 #2578BC #4497DA #77B3E4

Accessibility & contrast

On white

4.68

#2578BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#2578BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2578BC

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2578BC	#FFFFFF	#000000	##FFFFFF
##2578BC	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBF

Deuteranopia (green-blind)

#426EBB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #2578bc;
/* rgb */ color: rgb(37, 120, 188);
/* oklch */ color: oklch(55.8% 0.131 248.0);

Tailwind

colors: {
  custom: {
    50: '#779ed0',
    500: '#2578bc',
    950: '#000000',
  },
}

SCSS

$custom: #2578bc;
$custom-light: #779ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#2578bc",
  "rgb": {
    "r": 37,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 207.02,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.55767,
    "c": 0.13091,
    "h": 248
  },
  "luminance": 0.17457
}

Semantic roles & 50–950 ramp

primary

#2578BC

secondary

#CC9A71

accent

#8B3EEA

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #2578BC

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

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