#2A51B7#2A51B7

#2A51B7 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.9% C 0.168 H 264.8°. Best body text is #FFFFFF at 7.10:1 contrast (WCAG AA passes).

Color values

HEX	#2A51B7
RGB	rgb(42, 81, 183)
HSL	hsl(223, 63%, 44%)
HSV	hsv(223, 77%, 72%)
CMYK	cmyk(77%, 55.7%, 0%, 28.2%)
CIE-LAB	lab(37.47, 23.39, -57.91)
CIE-LCH	lch(37.47, 62.45, 292.00°)
OKLab	oklab(46.94% -0.0153 -0.167)
OKLCH	oklch(46.94% 0.168 264.8)
XYZ	xyz(12.4415, 9.7946, 46.0254)
Luminance	0.0980 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A51B7 #B7902A

analogous

#2A98B7 #2A51B7 #492AB7

triadic

#2A51B7 #B72A51 #51B72A

tetradic

#2A51B7 #B72A98 #B7902A #2AB749

square

#2A51B7 #B72A98 #B7902A #2AB749

split-complementary

#2A51B7 #B7492A #98B72A

monochromatic

#132553 #1F3B85 #2A51B7 #4970D5 #7B97E1

Accessibility & contrast

On white

7.10

#2A51B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#2A51B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A51B7

7.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A51B7	#FFFFFF	#000000	##FFFFFF
##2A51B7	1.00	7.10	2.96	7.10
#FFFFFF	7.10	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBB

Deuteranopia (green-blind)

#0052B5

Tritanopia (blue-blind)

#006A7C

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2a51b7;
/* rgb */ color: rgb(42, 81, 183);
/* oklch */ color: oklch(46.9% 0.168 264.8);

Tailwind

colors: {
  custom: {
    50: '#7981cd',
    500: '#2a51b7',
    950: '#000000',
  },
}

SCSS

$custom: #2a51b7;
$custom-light: #7981cd;
$custom-dark: #000000;

JSON

{
  "hex": "#2a51b7",
  "rgb": {
    "r": 42,
    "g": 81,
    "b": 183
  },
  "hsl": {
    "h": 223.404,
    "s": 62.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.46942,
    "c": 0.16773,
    "h": 264.8
  },
  "luminance": 0.09796
}

Semantic roles & 50–950 ramp

primary

#2A51B7

secondary

#C9B174

accent

#B842E6

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0A0A14

muted

#7C7C82

Preview Lab

Preview with #2A51B7

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

Preview Lab → · Contrast checker → · Palette generator →