#2577BC#2577BC

#2577BC is a mid, vivid cyan. Relative luminance 0.172; OKLCH L 55.5% C 0.132 H 248.5°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#2577BC
RGB	rgb(37, 119, 188)
HSL	hsl(207, 67%, 44%)
HSV	hsv(207, 80%, 74%)
CMYK	cmyk(80.3%, 36.7%, 0%, 26.3%)
CIE-LAB	lab(48.53, 0.40, -43.06)
CIE-LCH	lch(48.53, 43.07, 270.53°)
OKLab	oklab(55.53% -0.0482 -0.1227)
OKLCH	oklch(55.53% 0.132 248.5)
XYZ	xyz(16.4334, 17.2158, 50.0241)
Luminance	0.1722 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2577BC #BC6A25

analogous

#25BCB6 #2577BC #252CBC

triadic

#2577BC #BC2577 #77BC25

tetradic

#2577BC #B625BC #BC6A25 #2CBC25

square

#2577BC #B625BC #BC6A25 #2CBC25

split-complementary

#2577BC #BC252C #BCB625

monochromatic

#113656 #1B5789 #2577BC #4496DA #77B2E4

Accessibility & contrast

On white

4.73

#2577BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#2577BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2577BC

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2577BC	#FFFFFF	#000000	##FFFFFF
##2577BC	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#567BBF

Deuteranopia (green-blind)

#406DBB

Tritanopia (blue-blind)

#008890

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #2577bc;
/* rgb */ color: rgb(37, 119, 188);
/* oklch */ color: oklch(55.5% 0.132 248.5);

Tailwind

colors: {
  custom: {
    50: '#779dd0',
    500: '#2577bc',
    950: '#000000',
  },
}

SCSS

$custom: #2577bc;
$custom-light: #779dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#2577bc",
  "rgb": {
    "r": 37,
    "g": 119,
    "b": 188
  },
  "hsl": {
    "h": 207.417,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.55533,
    "c": 0.13189,
    "h": 248.5
  },
  "luminance": 0.17218
}

Semantic roles & 50–950 ramp

primary

#2577BC

secondary

#CC9A71

accent

#8C3EEA

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #2577BC

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

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