#2564B0#2564B0

#2564B0 is a mid, vivid cyan. Relative luminance 0.126; OKLCH L 50.4% C 0.137 H 255.3°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#2564B0
RGB	rgb(37, 100, 176)
HSL	hsl(213, 65%, 42%)
HSV	hsv(213, 79%, 69%)
CMYK	cmyk(79%, 43.2%, 0%, 31%)
CIE-LAB	lab(42.22, 7.69, -46.15)
CIE-LCH	lch(42.22, 46.78, 279.46°)
OKLab	oklab(50.38% -0.0347 -0.1321)
OKLCH	oklch(50.38% 0.137 255.3)
XYZ	xyz(13.1537, 12.6407, 42.8125)
Luminance	0.1264 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2564B0 #B07125

analogous

#25AAB0 #2564B0 #2C25B0

triadic

#2564B0 #B02564 #64B025

tetradic

#2564B0 #B025AA #B07125 #25B02C

square

#2564B0 #B025AA #B07125 #25B02C

split-complementary

#2564B0 #B02C25 #AAB025

monochromatic

#102B4B #1A477D #2564B0 #3C82D6 #6FA2E1

Accessibility & contrast

On white

5.95

#2564B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#2564B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2564B0

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2564B0	#FFFFFF	#000000	##FFFFFF
##2564B0	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E6AB3

Deuteranopia (green-blind)

#245EAE

Tritanopia (blue-blind)

#007681

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #2564b0;
/* rgb */ color: rgb(37, 100, 176);
/* oklch */ color: oklch(50.4% 0.137 255.3);

Tailwind

colors: {
  custom: {
    50: '#758fc8',
    500: '#2564b0',
    950: '#000000',
  },
}

SCSS

$custom: #2564b0;
$custom-light: #758fc8;
$custom-dark: #000000;

JSON

{
  "hex": "#2564b0",
  "rgb": {
    "r": 37,
    "g": 100,
    "b": 176
  },
  "hsl": {
    "h": 212.806,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.50379,
    "c": 0.13661,
    "h": 255.3
  },
  "luminance": 0.12642
}

Semantic roles & 50–950 ramp

primary

#2564B0

secondary

#C79D6A

accent

#9C40E8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #2564B0

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

Preview Lab → · Contrast checker → · Palette generator →