#2A51B6#2A51B6

#2A51B6 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.9% C 0.166 H 264.7°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#2A51B6
RGB	rgb(42, 81, 182)
HSL	hsl(223, 63%, 44%)
HSV	hsv(223, 77%, 71%)
CMYK	cmyk(76.9%, 55.5%, 0%, 28.6%)
CIE-LAB	lab(37.40, 23.01, -57.44)
CIE-LCH	lch(37.40, 61.88, 291.83°)
OKLab	oklab(46.86% -0.0153 -0.1657)
OKLCH	oklch(46.86% 0.166 264.7)
XYZ	xyz(12.3378, 9.7531, 45.4792)
Luminance	0.0975 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A51B6 #B68F2A

analogous

#2A97B6 #2A51B6 #492AB6

triadic

#2A51B6 #B62A51 #51B62A

tetradic

#2A51B6 #B62A97 #B68F2A #2AB649

square

#2A51B6 #B62A97 #B68F2A #2AB649

split-complementary

#2A51B6 #B6492A #97B62A

monochromatic

#132553 #1F3B84 #2A51B6 #486FD5 #7A97E0

Accessibility & contrast

On white

7.12

#2A51B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#2A51B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A51B6

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A51B6	#FFFFFF	#000000	##FFFFFF
##2A51B6	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FB9

Deuteranopia (green-blind)

#0052B4

Tritanopia (blue-blind)

#006A7B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2a51b6;
/* rgb */ color: rgb(42, 81, 182);
/* oklch */ color: oklch(46.9% 0.166 264.7);

Tailwind

colors: {
  custom: {
    50: '#7981cd',
    500: '#2a51b6',
    950: '#000000',
  },
}

SCSS

$custom: #2a51b6;
$custom-light: #7981cd;
$custom-dark: #000000;

JSON

{
  "hex": "#2a51b6",
  "rgb": {
    "r": 42,
    "g": 81,
    "b": 182
  },
  "hsl": {
    "h": 223.286,
    "s": 62.5,
    "l": 43.922
  },
  "oklch": {
    "l": 0.46862,
    "c": 0.16637,
    "h": 264.7
  },
  "luminance": 0.09754
}

Semantic roles & 50–950 ramp

primary

#2A51B6

secondary

#C8B173

accent

#B842E6

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2A51B6

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

Preview Lab → · Contrast checker → · Palette generator →