#2663BC#2663BC

#2663BC is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.0% C 0.154 H 258.4°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#2663BC
RGB	rgb(38, 99, 188)
HSL	hsl(216, 66%, 44%)
HSV	hsv(216, 80%, 74%)
CMYK	cmyk(79.8%, 47.3%, 0%, 26.3%)
CIE-LAB	lab(42.71, 13.09, -52.37)
CIE-LCH	lch(42.71, 53.98, 284.03°)
OKLab	oklab(51.01% -0.031 -0.1504)
OKLCH	oklch(51.01% 0.154 258.4)
XYZ	xyz(14.3349, 12.9649, 49.3142)
Luminance	0.1297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2663BC #BC7F26

analogous

#26AEBC #2663BC #3426BC

triadic

#2663BC #BC2663 #63BC26

tetradic

#2663BC #BC26AE #BC7F26 #26BC34

square

#2663BC #BC26AE #BC7F26 #26BC34

split-complementary

#2663BC #BC3426 #AEBC26

monochromatic

#112D56 #1C4889 #2663BC #4682DA #79A4E4

Accessibility & contrast

On white

5.84

#2663BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#2663BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2663BC

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2663BC	#FFFFFF	#000000	##FFFFFF
##2663BC	1.00	5.84	3.59	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#316CBF

Deuteranopia (green-blind)

#005FBA

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #2663bc;
/* rgb */ color: rgb(38, 99, 188);
/* oklch */ color: oklch(51.0% 0.154 258.4);

Tailwind

colors: {
  custom: {
    50: '#788ed1',
    500: '#2663bc',
    950: '#000000',
  },
}

SCSS

$custom: #2663bc;
$custom-light: #788ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#2663bc",
  "rgb": {
    "r": 38,
    "g": 99,
    "b": 188
  },
  "hsl": {
    "h": 215.6,
    "s": 66.372,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51011,
    "c": 0.15361,
    "h": 258.4
  },
  "luminance": 0.12967
}

Semantic roles & 50–950 ramp

primary

#2663BC

secondary

#CCA772

accent

#A43FE9

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0A0C14

muted

#7C7D82

Preview Lab

Preview with #2663BC

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

Preview Lab → · Contrast checker → · Palette generator →