#2551A3#2551A3

#2551A3 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.2% C 0.142 H 261.5°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#2551A3
RGB	rgb(37, 81, 163)
HSL	hsl(219, 63%, 39%)
HSV	hsv(219, 77%, 64%)
CMYK	cmyk(77.3%, 50.3%, 0%, 36.1%)
CIE-LAB	lab(35.83, 15.07, -48.70)
CIE-LCH	lch(35.83, 50.98, 287.20°)
OKLab	oklab(45.19% -0.021 -0.14)
OKLCH	oklch(45.19% 0.142 261.5)
XYZ	xyz(10.3139, 8.9213, 35.8216)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2551A3 #A37725

analogous

#2590A3 #2551A3 #3825A3

triadic

#2551A3 #A32551 #51A325

tetradic

#2551A3 #A32590 #A37725 #25A338

square

#2551A3 #A32590 #A37725 #25A338

split-complementary

#2551A3 #A33825 #90A325

monochromatic

#0E1F3F #1A3871 #2551A3 #346BD1 #668FDC

Accessibility & contrast

On white

7.54

#2551A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#2551A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2551A3

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2551A3	#FFFFFF	#000000	##FFFFFF
##2551A3	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#205AA6

Deuteranopia (green-blind)

#004FA1

Tritanopia (blue-blind)

#006572

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #2551a3;
/* rgb */ color: rgb(37, 81, 163);
/* oklch */ color: oklch(45.2% 0.142 261.5);

Tailwind

colors: {
  custom: {
    50: '#7381bf',
    500: '#2551a3',
    950: '#000000',
  },
}

SCSS

$custom: #2551a3;
$custom-light: #7381bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2551a3",
  "rgb": {
    "r": 37,
    "g": 81,
    "b": 163
  },
  "hsl": {
    "h": 219.048,
    "s": 63,
    "l": 39.216
  },
  "oklch": {
    "l": 0.45186,
    "c": 0.1416,
    "h": 261.5
  },
  "luminance": 0.08923
}

Semantic roles & 50–950 ramp

primary

#2551A3

secondary

#C2A062

accent

#AD42E6

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #2551A3

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

Preview Lab → · Contrast checker → · Palette generator →