#2B51B0#2B51B0

#2B51B0 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.4% C 0.158 H 264.5°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#2B51B0
RGB	rgb(43, 81, 176)
HSL	hsl(223, 61%, 43%)
HSV	hsv(223, 76%, 69%)
CMYK	cmyk(75.6%, 54%, 0%, 31%)
CIE-LAB	lab(36.99, 20.84, -54.56)
CIE-LCH	lch(36.99, 58.40, 290.90°)
OKLab	oklab(46.42% -0.015 -0.1572)
OKLCH	oklch(46.42% 0.158 264.5)
XYZ	xyz(11.7724, 9.5317, 42.2852)
Luminance	0.0953 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B51B0 #B08A2B

analogous

#2B93B0 #2B51B0 #472BB0

triadic

#2B51B0 #B02B51 #51B02B

tetradic

#2B51B0 #B02B93 #B08A2B #2BB047

square

#2B51B0 #B02B93 #B08A2B #2BB047

split-complementary

#2B51B0 #B0472B #93B02B

monochromatic

#13244E #1F3A7F #2B51B0 #466ED2 #7895DE

Accessibility & contrast

On white

7.22

#2B51B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#2B51B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B51B0

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B51B0	#FFFFFF	#000000	##FFFFFF
##2B51B0	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#045DB3

Deuteranopia (green-blind)

#0051AE

Tritanopia (blue-blind)

#006878

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #2b51b0;
/* rgb */ color: rgb(43, 81, 176);
/* oklch */ color: oklch(46.4% 0.158 264.5);

Tailwind

colors: {
  custom: {
    50: '#7881c8',
    500: '#2b51b0',
    950: '#000000',
  },
}

SCSS

$custom: #2b51b0;
$custom-light: #7881c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2b51b0",
  "rgb": {
    "r": 43,
    "g": 81,
    "b": 176
  },
  "hsl": {
    "h": 222.857,
    "s": 60.731,
    "l": 42.941
  },
  "oklch": {
    "l": 0.46424,
    "c": 0.15788,
    "h": 264.5
  },
  "luminance": 0.09533
}

Semantic roles & 50–950 ramp

primary

#2B51B0

secondary

#C6AE71

accent

#B644E4

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2B51B0

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

Preview Lab → · Contrast checker → · Palette generator →