#2A51AB#2A51AB

#2A51AB is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.0% C 0.151 H 263.8°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#2A51AB
RGB	rgb(42, 81, 171)
HSL	hsl(222, 61%, 42%)
HSV	hsv(222, 75%, 67%)
CMYK	cmyk(75.4%, 52.6%, 0%, 32.9%)
CIE-LAB	lab(36.59, 18.80, -52.25)
CIE-LCH	lch(36.59, 55.52, 289.79°)
OKLab	oklab(45.99% -0.0163 -0.1504)
OKLCH	oklch(45.99% 0.151 263.8)
XYZ	xyz(11.2453, 9.3161, 39.7257)
Luminance	0.0932 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A51AB #AB842A

analogous

#2A92AB #2A51AB #432AAB

triadic

#2A51AB #AB2A51 #51AB2A

tetradic

#2A51AB #AB2A92 #AB842A #2AAB43

square

#2A51AB #AB2A92 #AB842A #2AAB43

split-complementary

#2A51AB #AB432A #92AB2A

monochromatic

#122249 #1E3A7A #2A51AB #426DD1 #7393DD

Accessibility & contrast

On white

7.33

#2A51AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#2A51AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A51AB

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A51AB	#FFFFFF	#000000	##FFFFFF
##2A51AB	1.00	7.33	2.86	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#135CAE

Deuteranopia (green-blind)

#0050A9

Tritanopia (blue-blind)

#006776

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #2a51ab;
/* rgb */ color: rgb(42, 81, 171);
/* oklch */ color: oklch(46.0% 0.151 263.8);

Tailwind

colors: {
  custom: {
    50: '#7681c5',
    500: '#2a51ab',
    950: '#000000',
  },
}

SCSS

$custom: #2a51ab;
$custom-light: #7681c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2a51ab",
  "rgb": {
    "r": 42,
    "g": 81,
    "b": 171
  },
  "hsl": {
    "h": 221.86,
    "s": 60.563,
    "l": 41.765
  },
  "oklch": {
    "l": 0.45993,
    "c": 0.15126,
    "h": 263.8
  },
  "luminance": 0.09317
}

Semantic roles & 50–950 ramp

primary

#2A51AB

secondary

#C4AA6D

accent

#B344E4

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2A51AB

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

Preview Lab → · Contrast checker → · Palette generator →