#2550B0#2550B0

#2550B0 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.0% C 0.161 H 263.3°. Best body text is #FFFFFF at 7.36:1 contrast (WCAG AA passes).

Color values

HEX	#2550B0
RGB	rgb(37, 80, 176)
HSL	hsl(221, 65%, 42%)
HSV	hsv(221, 79%, 69%)
CMYK	cmyk(79%, 54.5%, 0%, 31%)
CIE-LAB	lab(36.49, 20.81, -55.38)
CIE-LCH	lch(36.49, 59.16, 290.60°)
OKLab	oklab(45.98% -0.0188 -0.1597)
OKLCH	oklch(45.98% 0.161 263.3)
XYZ	xyz(11.4653, 9.2639, 42.2497)
Luminance	0.0926 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2550B0 #B08525

analogous

#2596B0 #2550B0 #4025B0

triadic

#2550B0 #B02550 #50B025

tetradic

#2550B0 #B02596 #B08525 #25B040

square

#2550B0 #B02596 #B08525 #25B040

split-complementary

#2550B0 #B04025 #96B025

monochromatic

#10224B #1A397D #2550B0 #3C6CD6 #6F92E1

Accessibility & contrast

On white

7.36

#2550B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#2550B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2550B0

7.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2550B0	#FFFFFF	#000000	##FFFFFF
##2550B0	1.00	7.36	2.85	7.36
#FFFFFF	7.36	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB3

Deuteranopia (green-blind)

#0050AE

Tritanopia (blue-blind)

#006878

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #2550b0;
/* rgb */ color: rgb(37, 80, 176);
/* oklch */ color: oklch(46.0% 0.161 263.3);

Tailwind

colors: {
  custom: {
    50: '#7680c8',
    500: '#2550b0',
    950: '#000000',
  },
}

SCSS

$custom: #2550b0;
$custom-light: #7680c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2550b0",
  "rgb": {
    "r": 37,
    "g": 80,
    "b": 176
  },
  "hsl": {
    "h": 221.439,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.45982,
    "c": 0.1608,
    "h": 263.3
  },
  "luminance": 0.09265
}

Semantic roles & 50–950 ramp

primary

#2550B0

secondary

#C7AA6A

accent

#B440E8

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2550B0

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

Preview Lab → · Contrast checker → · Palette generator →