#2577BD#2577BD

#2577BD is a mid, vivid cyan. Relative luminance 0.173; OKLCH L 55.6% C 0.133 H 248.9°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#2577BD
RGB	rgb(37, 119, 189)
HSL	hsl(208, 67%, 44%)
HSV	hsv(208, 80%, 74%)
CMYK	cmyk(80.4%, 37%, 0%, 25.9%)
CIE-LAB	lab(48.58, 0.77, -43.56)
CIE-LCH	lch(48.58, 43.56, 271.02°)
OKLab	oklab(55.59% -0.048 -0.1242)
OKLCH	oklch(55.59% 0.133 248.9)
XYZ	xyz(16.5416, 17.2591, 50.5938)
Luminance	0.1726 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2577BD #BD6B25

analogous

#25BDB7 #2577BD #252BBD

triadic

#2577BD #BD2577 #77BD25

tetradic

#2577BD #B725BD #BD6B25 #2BBD25

square

#2577BD #B725BD #BD6B25 #2BBD25

split-complementary

#2577BD #BD252B #BDB725

monochromatic

#113757 #1B578A #2577BD #4596DB #78B2E5

Accessibility & contrast

On white

4.72

#2577BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#2577BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2577BD

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2577BD	#FFFFFF	#000000	##FFFFFF
##2577BD	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#567BC0

Deuteranopia (green-blind)

#3F6DBC

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #2577bd;
/* rgb */ color: rgb(37, 119, 189);
/* oklch */ color: oklch(55.6% 0.133 248.9);

Tailwind

colors: {
  custom: {
    50: '#789dd1',
    500: '#2577bd',
    950: '#000000',
  },
}

SCSS

$custom: #2577bd;
$custom-light: #789dd1;
$custom-dark: #000000;

JSON

{
  "hex": "#2577bd",
  "rgb": {
    "r": 37,
    "g": 119,
    "b": 189
  },
  "hsl": {
    "h": 207.632,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.55593,
    "c": 0.13312,
    "h": 248.9
  },
  "luminance": 0.17261
}

Semantic roles & 50–950 ramp

primary

#2577BD

secondary

#CC9B72

accent

#8D3EEA

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #2577BD

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

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