#2551AE#2551AE

#2551AE is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.0% C 0.157 H 262.8°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#2551AE
RGB	rgb(37, 81, 174)
HSL	hsl(221, 65%, 41%)
HSV	hsv(221, 79%, 68%)
CMYK	cmyk(78.7%, 53.4%, 0%, 31.8%)
CIE-LAB	lab(36.62, 19.37, -53.98)
CIE-LCH	lch(36.62, 57.35, 289.74°)
OKLab	oklab(46.03% -0.0197 -0.1556)
OKLCH	oklch(46.03% 0.157 262.8)
XYZ	xyz(11.3426, 9.3328, 41.2398)
Luminance	0.0933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2551AE #AE8225

analogous

#2596AE #2551AE #3E25AE

triadic

#2551AE #AE2551 #51AE25

tetradic

#2551AE #AE2596 #AE8225 #25AE3E

square

#2551AE #AE2596 #AE8225 #25AE3E

split-complementary

#2551AE #AE3E25 #96AE25

monochromatic

#102249 #1A3A7C #2551AE #3B6CD5 #6D92E0

Accessibility & contrast

On white

7.33

#2551AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#2551AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2551AE

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2551AE	#FFFFFF	#000000	##FFFFFF
##2551AE	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#095DB1

Deuteranopia (green-blind)

#0050AC

Tritanopia (blue-blind)

#006877

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #2551ae;
/* rgb */ color: rgb(37, 81, 174);
/* oklch */ color: oklch(46.0% 0.157 262.8);

Tailwind

colors: {
  custom: {
    50: '#7581c7',
    500: '#2551ae',
    950: '#000000',
  },
}

SCSS

$custom: #2551ae;
$custom-light: #7581c7;
$custom-dark: #000000;

JSON

{
  "hex": "#2551ae",
  "rgb": {
    "r": 37,
    "g": 81,
    "b": 174
  },
  "hsl": {
    "h": 220.73,
    "s": 64.929,
    "l": 41.373
  },
  "oklch": {
    "l": 0.46033,
    "c": 0.15682,
    "h": 262.8
  },
  "luminance": 0.09334
}

Semantic roles & 50–950 ramp

primary

#2551AE

secondary

#C6A868

accent

#B240E8

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2551AE

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

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