#2563B7#2563B7

#2563B7 is a mid, vivid cyan. Relative luminance 0.127; OKLCH L 50.6% C 0.147 H 257.3°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#2563B7
RGB	rgb(37, 99, 183)
HSL	hsl(215, 66%, 43%)
HSV	hsv(215, 80%, 72%)
CMYK	cmyk(79.8%, 45.9%, 0%, 28.2%)
CIE-LAB	lab(42.36, 11.05, -50.02)
CIE-LCH	lch(42.36, 51.22, 282.45°)
OKLab	oklab(50.63% -0.0324 -0.1435)
OKLCH	oklch(50.63% 0.147 257.3)
XYZ	xyz(13.7689, 12.7342, 46.5228)
Luminance	0.1274 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2563B7 #B77925

analogous

#25ACB7 #2563B7 #3025B7

triadic

#2563B7 #B72563 #63B725

tetradic

#2563B7 #B725AC #B77925 #25B730

square

#2563B7 #B725AC #B77925 #25B730

split-complementary

#2563B7 #B73025 #ACB725

monochromatic

#102C51 #1B4784 #2563B7 #4181D9 #74A3E3

Accessibility & contrast

On white

5.92

#2563B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#2563B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2563B7

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2563B7	#FFFFFF	#000000	##FFFFFF
##2563B7	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366BBA

Deuteranopia (green-blind)

#125EB5

Tritanopia (blue-blind)

#007784

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #2563b7;
/* rgb */ color: rgb(37, 99, 183);
/* oklch */ color: oklch(50.6% 0.147 257.3);

Tailwind

colors: {
  custom: {
    50: '#778ecd',
    500: '#2563b7',
    950: '#000000',
  },
}

SCSS

$custom: #2563b7;
$custom-light: #778ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#2563b7",
  "rgb": {
    "r": 37,
    "g": 99,
    "b": 183
  },
  "hsl": {
    "h": 214.521,
    "s": 66.364,
    "l": 43.137
  },
  "oklch": {
    "l": 0.5063,
    "c": 0.14716,
    "h": 257.3
  },
  "luminance": 0.12736
}

Semantic roles & 50–950 ramp

primary

#2563B7

secondary

#CAA36E

accent

#A13FE9

background

#F7F8FC

surface

#EEF0F9

border

#C9CBD2

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #2563B7

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

Preview Lab → · Contrast checker → · Palette generator →