#2563AF#2563AF

#2563AF is a mid, vivid cyan. Relative luminance 0.124; OKLCH L 50.1% C 0.136 H 255.6°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#2563AF
RGB	rgb(37, 99, 175)
HSL	hsl(213, 65%, 42%)
HSV	hsv(213, 79%, 69%)
CMYK	cmyk(78.9%, 43.4%, 0%, 31.4%)
CIE-LAB	lab(41.86, 7.95, -46.13)
CIE-LCH	lch(41.86, 46.81, 279.77°)
OKLab	oklab(50.08% -0.034 -0.1321)
OKLCH	oklch(50.08% 0.136 255.6)
XYZ	xyz(12.9598, 12.4106, 42.2616)
Luminance	0.1241 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2563AF #AF7125

analogous

#25A8AF #2563AF #2C25AF

triadic

#2563AF #AF2563 #63AF25

tetradic

#2563AF #AF25A8 #AF7125 #25AF2C

square

#2563AF #AF25A8 #AF7125 #25AF2C

split-complementary

#2563AF #AF2C25 #A8AF25

monochromatic

#102A4A #1A467C #2563AF #3C81D6 #6EA1E0

Accessibility & contrast

On white

6.03

#2563AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#2563AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2563AF

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2563AF	#FFFFFF	#000000	##FFFFFF
##2563AF	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6AB2

Deuteranopia (green-blind)

#235DAD

Tritanopia (blue-blind)

#007580

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #2563af;
/* rgb */ color: rgb(37, 99, 175);
/* oklch */ color: oklch(50.1% 0.136 255.6);

Tailwind

colors: {
  custom: {
    50: '#758ec7',
    500: '#2563af',
    950: '#000000',
  },
}

SCSS

$custom: #2563af;
$custom-light: #758ec7;
$custom-dark: #000000;

JSON

{
  "hex": "#2563af",
  "rgb": {
    "r": 37,
    "g": 99,
    "b": 175
  },
  "hsl": {
    "h": 213.043,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.50083,
    "c": 0.13642,
    "h": 255.6
  },
  "luminance": 0.12412
}

Semantic roles & 50–950 ramp

primary

#2563AF

secondary

#C79D69

accent

#9C40E8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #2563AF

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

Preview Lab → · Contrast checker → · Palette generator →