#2551A2#2551A2

#2551A2 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.1% C 0.140 H 261.3°. Best body text is #FFFFFF at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#2551A2
RGB	rgb(37, 81, 162)
HSL	hsl(219, 63%, 39%)
HSV	hsv(219, 77%, 64%)
CMYK	cmyk(77.2%, 50%, 0%, 36.5%)
CIE-LAB	lab(35.76, 14.68, -48.21)
CIE-LCH	lch(35.76, 50.40, 286.93°)
OKLab	oklab(45.11% -0.0212 -0.1386)
OKLCH	oklch(45.11% 0.14 261.3)
XYZ	xyz(10.2246, 8.8856, 35.3516)
Luminance	0.0889 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2551A2 #A27625

analogous

#2590A2 #2551A2 #3825A2

triadic

#2551A2 #A22551 #51A225

tetradic

#2551A2 #A22590 #A27625 #25A238

square

#2551A2 #A22590 #A27625 #25A238

split-complementary

#2551A2 #A23825 #90A225

monochromatic

#0E1F3E #1A3870 #2551A2 #346BD1 #658FDC

Accessibility & contrast

On white

7.56

#2551A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#2551A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2551A2

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2551A2	#FFFFFF	#000000	##FFFFFF
##2551A2	1.00	7.56	2.78	7.56
#FFFFFF	7.56	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#215AA5

Deuteranopia (green-blind)

#004FA0

Tritanopia (blue-blind)

#006472

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #2551a2;
/* rgb */ color: rgb(37, 81, 162);
/* oklch */ color: oklch(45.1% 0.140 261.3);

Tailwind

colors: {
  custom: {
    50: '#7281be',
    500: '#2551a2',
    950: '#000000',
  },
}

SCSS

$custom: #2551a2;
$custom-light: #7281be;
$custom-dark: #000000;

JSON

{
  "hex": "#2551a2",
  "rgb": {
    "r": 37,
    "g": 81,
    "b": 162
  },
  "hsl": {
    "h": 218.88,
    "s": 62.814,
    "l": 39.02
  },
  "oklch": {
    "l": 0.45111,
    "c": 0.14021,
    "h": 261.3
  },
  "luminance": 0.08887
}

Semantic roles & 50–950 ramp

primary

#2551A2

secondary

#C2A061

accent

#AC42E6

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #2551A2

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

Preview Lab → · Contrast checker → · Palette generator →