#2B51B8#2B51B8

#2B51B8 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.1% C 0.169 H 265.1°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#2B51B8
RGB	rgb(43, 81, 184)
HSL	hsl(224, 62%, 45%)
HSV	hsv(224, 77%, 72%)
CMYK	cmyk(76.6%, 56%, 0%, 27.8%)
CIE-LAB	lab(37.59, 23.89, -58.31)
CIE-LCH	lch(37.59, 63.01, 292.28°)
OKLab	oklab(47.06% -0.0144 -0.1682)
OKLCH	oklch(47.06% 0.169 265.1)
XYZ	xyz(12.5874, 9.8577, 46.5774)
Luminance	0.0986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B51B8 #B8922B

analogous

#2B98B8 #2B51B8 #4C2BB8

triadic

#2B51B8 #B82B51 #51B82B

tetradic

#2B51B8 #B82B98 #B8922B #2BB84C

square

#2B51B8 #B82B98 #B8922B #2BB84C

split-complementary

#2B51B8 #B84C2B #98B82B

monochromatic

#142555 #1F3B86 #2B51B8 #4B70D5 #7D98E1

Accessibility & contrast

On white

7.07

#2B51B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#2B51B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B51B8

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B51B8	#FFFFFF	#000000	##FFFFFF
##2B51B8	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBC

Deuteranopia (green-blind)

#0052B6

Tritanopia (blue-blind)

#006A7C

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2b51b8;
/* rgb */ color: rgb(43, 81, 184);
/* oklch */ color: oklch(47.1% 0.169 265.1);

Tailwind

colors: {
  custom: {
    50: '#7981ce',
    500: '#2b51b8',
    950: '#000000',
  },
}

SCSS

$custom: #2b51b8;
$custom-light: #7981ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2b51b8",
  "rgb": {
    "r": 43,
    "g": 81,
    "b": 184
  },
  "hsl": {
    "h": 223.83,
    "s": 62.115,
    "l": 44.51
  },
  "oklch": {
    "l": 0.47064,
    "c": 0.16881,
    "h": 265.1
  },
  "luminance": 0.09859
}

Semantic roles & 50–950 ramp

primary

#2B51B8

secondary

#C9B376

accent

#B943E5

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #2B51B8

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

Preview Lab → · Contrast checker → · Palette generator →