#2550B5#2550B5

#2550B5 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.4% C 0.168 H 263.7°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#2550B5
RGB	rgb(37, 80, 181)
HSL	hsl(222, 66%, 43%)
HSV	hsv(222, 80%, 71%)
CMYK	cmyk(79.6%, 55.8%, 0%, 29%)
CIE-LAB	lab(36.87, 22.75, -57.72)
CIE-LCH	lch(36.87, 62.04, 291.51°)
OKLab	oklab(46.39% -0.0184 -0.1666)
OKLCH	oklch(46.39% 0.168 263.7)
XYZ	xyz(11.9691, 9.4654, 44.9033)
Luminance	0.0947 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2550B5 #B58A25

analogous

#2598B5 #2550B5 #4225B5

triadic

#2550B5 #B52550 #50B525

tetradic

#2550B5 #B52598 #B58A25 #25B542

square

#2550B5 #B52598 #B58A25 #25B542

split-complementary

#2550B5 #B54225 #98B525

monochromatic

#10234F #1B3A82 #2550B5 #3F6DD8 #7294E2

Accessibility & contrast

On white

7.26

#2550B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#2550B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2550B5

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2550B5	#FFFFFF	#000000	##FFFFFF
##2550B5	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB8

Deuteranopia (green-blind)

#0050B3

Tritanopia (blue-blind)

#00697A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #2550b5;
/* rgb */ color: rgb(37, 80, 181);
/* oklch */ color: oklch(46.4% 0.168 263.7);

Tailwind

colors: {
  custom: {
    50: '#7780cc',
    500: '#2550b5',
    950: '#000000',
  },
}

SCSS

$custom: #2550b5;
$custom-light: #7780cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2550b5",
  "rgb": {
    "r": 37,
    "g": 80,
    "b": 181
  },
  "hsl": {
    "h": 222.083,
    "s": 66.055,
    "l": 42.745
  },
  "oklch": {
    "l": 0.46387,
    "c": 0.16759,
    "h": 263.7
  },
  "luminance": 0.09467
}

Semantic roles & 50–950 ramp

primary

#2550B5

secondary

#C9AE6D

accent

#B63FE9

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2550B5

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

Preview Lab → · Contrast checker → · Palette generator →