#2550B9#2550B9

#2550B9 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.7% C 0.173 H 264.0°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#2550B9
RGB	rgb(37, 80, 185)
HSL	hsl(223, 67%, 44%)
HSV	hsv(223, 80%, 73%)
CMYK	cmyk(80%, 56.8%, 0%, 27.5%)
CIE-LAB	lab(37.17, 24.29, -59.57)
CIE-LCH	lch(37.17, 64.34, 292.18°)
OKLab	oklab(46.72% -0.0181 -0.172)
OKLCH	oklch(46.72% 0.173 264)
XYZ	xyz(12.3854, 9.6320, 47.0959)
Luminance	0.0963 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2550B9 #B98E25

analogous

#259AB9 #2550B9 #4425B9

triadic

#2550B9 #B92550 #50B925

tetradic

#2550B9 #B9259A #B98E25 #25B944

square

#2550B9 #B9259A #B98E25 #25B944

split-complementary

#2550B9 #B94425 #9AB925

monochromatic

#112453 #1B3A86 #2550B9 #426ED9 #7595E3

Accessibility & contrast

On white

7.18

#2550B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#2550B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2550B9

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2550B9	#FFFFFF	#000000	##FFFFFF
##2550B9	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBD

Deuteranopia (green-blind)

#0051B7

Tritanopia (blue-blind)

#006A7C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #2550b9;
/* rgb */ color: rgb(37, 80, 185);
/* oklch */ color: oklch(46.7% 0.173 264.0);

Tailwind

colors: {
  custom: {
    50: '#7880cf',
    500: '#2550b9',
    950: '#000000',
  },
}

SCSS

$custom: #2550b9;
$custom-light: #7880cf;
$custom-dark: #000000;

JSON

{
  "hex": "#2550b9",
  "rgb": {
    "r": 37,
    "g": 80,
    "b": 185
  },
  "hsl": {
    "h": 222.568,
    "s": 66.667,
    "l": 43.529
  },
  "oklch": {
    "l": 0.46716,
    "c": 0.17298,
    "h": 264
  },
  "luminance": 0.09633
}

Semantic roles & 50–950 ramp

primary

#2550B9

secondary

#CBB06F

accent

#B83EEA

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0A0A14

muted

#7C7C82

Preview Lab

Preview with #2550B9

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

Preview Lab → · Contrast checker → · Palette generator →