#2579BD#2579BD

#2579BD is a mid, vivid cyan. Relative luminance 0.177; OKLCH L 56.1% C 0.131 H 247.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#2579BD
RGB	rgb(37, 121, 189)
HSL	hsl(207, 67%, 44%)
HSV	hsv(207, 80%, 74%)
CMYK	cmyk(80.4%, 36%, 0%, 25.9%)
CIE-LAB	lab(49.18, -0.44, -42.61)
CIE-LCH	lch(49.18, 42.61, 269.41°)
OKLab	oklab(56.06% -0.0497 -0.1214)
OKLCH	oklch(56.06% 0.131 247.7)
XYZ	xyz(16.7821, 17.7401, 50.6739)
Luminance	0.1774 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2579BD #BD6925

analogous

#25BDB5 #2579BD #252DBD

triadic

#2579BD #BD2579 #79BD25

tetradic

#2579BD #B525BD #BD6925 #2DBD25

square

#2579BD #B525BD #BD6925 #2DBD25

split-complementary

#2579BD #BD252D #BDB525

monochromatic

#113757 #1B588A #2579BD #4597DB #78B4E5

Accessibility & contrast

On white

4.62

#2579BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#2579BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #2579BD

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2579BD	#FFFFFF	#000000	##FFFFFF
##2579BD	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#597CC0

Deuteranopia (green-blind)

#436FBC

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #2579bd;
/* rgb */ color: rgb(37, 121, 189);
/* oklch */ color: oklch(56.1% 0.131 247.7);

Tailwind

colors: {
  custom: {
    50: '#789fd1',
    500: '#2579bd',
    950: '#000000',
  },
}

SCSS

$custom: #2579bd;
$custom-light: #789fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#2579bd",
  "rgb": {
    "r": 37,
    "g": 121,
    "b": 189
  },
  "hsl": {
    "h": 206.842,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.5606,
    "c": 0.13117,
    "h": 247.7
  },
  "luminance": 0.17742
}

Semantic roles & 50–950 ramp

primary

#2579BD

secondary

#CC9A72

accent

#8B3EEA

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #2579BD

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

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