#2578BD#2578BD

#2578BD is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.132 H 248.3°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#2578BD
RGB	rgb(37, 120, 189)
HSL	hsl(207, 67%, 44%)
HSV	hsv(207, 80%, 74%)
CMYK	cmyk(80.4%, 36.5%, 0%, 25.9%)
CIE-LAB	lab(48.88, 0.17, -43.08)
CIE-LCH	lch(48.88, 43.08, 270.22°)
OKLab	oklab(55.83% -0.0488 -0.1228)
OKLCH	oklch(55.83% 0.132 248.3)
XYZ	xyz(16.6612, 17.4983, 50.6336)
Luminance	0.1750 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2578BD #BD6A25

analogous

#25BDB6 #2578BD #252CBD

triadic

#2578BD #BD2578 #78BD25

tetradic

#2578BD #B625BD #BD6A25 #2CBD25

square

#2578BD #B625BD #BD6A25 #2CBD25

split-complementary

#2578BD #BD252C #BDB625

monochromatic

#113757 #1B588A #2578BD #4597DB #78B3E5

Accessibility & contrast

On white

4.67

#2578BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#2578BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #2578BD

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2578BD	#FFFFFF	#000000	##FFFFFF
##2578BD	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#577CC0

Deuteranopia (green-blind)

#416EBC

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #2578bd;
/* rgb */ color: rgb(37, 120, 189);
/* oklch */ color: oklch(55.8% 0.132 248.3);

Tailwind

colors: {
  custom: {
    50: '#789ed1',
    500: '#2578bd',
    950: '#000000',
  },
}

SCSS

$custom: #2578bd;
$custom-light: #789ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#2578bd",
  "rgb": {
    "r": 37,
    "g": 120,
    "b": 189
  },
  "hsl": {
    "h": 207.237,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.55826,
    "c": 0.13214,
    "h": 248.3
  },
  "luminance": 0.175
}

Semantic roles & 50–950 ramp

primary

#2578BD

secondary

#CC9B72

accent

#8C3EEA

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #2578BD

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

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