#2563C9#2563C9

#2563C9 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.9% C 0.171 H 260.0°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#2563C9
RGB	rgb(37, 99, 201)
HSL	hsl(217, 69%, 47%)
HSV	hsv(217, 82%, 79%)
CMYK	cmyk(81.6%, 50.7%, 0%, 21.2%)
CIE-LAB	lab(43.55, 18.01, -58.54)
CIE-LCH	lch(43.55, 61.24, 287.10°)
OKLab	oklab(51.93% -0.0296 -0.1686)
OKLCH	oklch(51.93% 0.171 260)
XYZ	xyz(15.7636, 13.5321, 57.0282)
Luminance	0.1353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2563C9 #C98B25

analogous

#25B5C9 #2563C9 #3925C9

triadic

#2563C9 #C92563 #63C925

tetradic

#2563C9 #C925B5 #C98B25 #25C939

square

#2563C9 #C925B5 #C98B25 #25C939

split-complementary

#2563C9 #C93925 #B5C925

monochromatic

#123062 #1B4A95 #2563C9 #4D84DE #81A8E8

Accessibility & contrast

On white

5.67

#2563C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#2563C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2563C9

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2563C9	#FFFFFF	#000000	##FFFFFF
##2563C9	1.00	5.67	3.71	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#206FCD

Deuteranopia (green-blind)

#0060C7

Tritanopia (blue-blind)

#007C8C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #2563c9;
/* rgb */ color: rgb(37, 99, 201);
/* oklch */ color: oklch(51.9% 0.171 260.0);

Tailwind

colors: {
  custom: {
    50: '#7b8eda',
    500: '#2563c9',
    950: '#000000',
  },
}

SCSS

$custom: #2563c9;
$custom-light: #7b8eda;
$custom-dark: #000000;

JSON

{
  "hex": "#2563c9",
  "rgb": {
    "r": 37,
    "g": 99,
    "b": 201
  },
  "hsl": {
    "h": 217.317,
    "s": 68.908,
    "l": 46.667
  },
  "oklch": {
    "l": 0.51929,
    "c": 0.1712,
    "h": 260
  },
  "luminance": 0.13534
}

Semantic roles & 50–950 ramp

primary

#2563C9

secondary

#D0B079

accent

#A93CEC

background

#F8F8FD

surface

#EFF0FB

border

#CACBD4

text

#0B0C15

muted

#7C7D83

Preview Lab

Preview with #2563C9

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

Preview Lab → · Contrast checker → · Palette generator →