#2563BD#2563BD

#2563BD is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.1% C 0.155 H 258.3°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#2563BD
RGB	rgb(37, 99, 189)
HSL	hsl(216, 67%, 44%)
HSV	hsv(216, 80%, 74%)
CMYK	cmyk(80.4%, 47.6%, 0%, 25.9%)
CIE-LAB	lab(42.75, 13.37, -52.89)
CIE-LCH	lch(42.75, 54.55, 284.19°)
OKLab	oklab(51.05% -0.0314 -0.152)
OKLCH	oklch(51.05% 0.155 258.3)
XYZ	xyz(14.4067, 12.9894, 49.8821)
Luminance	0.1299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2563BD #BD7F25

analogous

#25AFBD #2563BD #3325BD

triadic

#2563BD #BD2563 #63BD25

tetradic

#2563BD #BD25AF #BD7F25 #25BD33

square

#2563BD #BD25AF #BD7F25 #25BD33

split-complementary

#2563BD #BD3325 #AFBD25

monochromatic

#112D57 #1B488A #2563BD #4582DB #78A4E5

Accessibility & contrast

On white

5.84

#2563BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#2563BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2563BD

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2563BD	#FFFFFF	#000000	##FFFFFF
##2563BD	1.00	5.84	3.60	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306CC0

Deuteranopia (green-blind)

#005FBB

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #2563bd;
/* rgb */ color: rgb(37, 99, 189);
/* oklch */ color: oklch(51.1% 0.155 258.3);

Tailwind

colors: {
  custom: {
    50: '#788ed1',
    500: '#2563bd',
    950: '#000000',
  },
}

SCSS

$custom: #2563bd;
$custom-light: #788ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#2563bd",
  "rgb": {
    "r": 37,
    "g": 99,
    "b": 189
  },
  "hsl": {
    "h": 215.526,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51053,
    "c": 0.15521,
    "h": 258.3
  },
  "luminance": 0.12991
}

Semantic roles & 50–950 ramp

primary

#2563BD

secondary

#CCA772

accent

#A43EEA

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0A0C14

muted

#7C7D82

Preview Lab

Preview with #2563BD

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

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