#2B51B3#2B51B3

#2B51B3 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.7% C 0.162 H 264.8°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#2B51B3
RGB	rgb(43, 81, 179)
HSL	hsl(223, 61%, 44%)
HSV	hsv(223, 76%, 70%)
CMYK	cmyk(76%, 54.7%, 0%, 29.8%)
CIE-LAB	lab(37.21, 21.98, -55.97)
CIE-LCH	lch(37.21, 60.13, 291.44°)
OKLab	oklab(46.66% -0.0148 -0.1613)
OKLCH	oklch(46.66% 0.162 264.8)
XYZ	xyz(12.0725, 9.6518, 43.8658)
Luminance	0.0965 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B51B3 #B38D2B

analogous

#2B95B3 #2B51B3 #492BB3

triadic

#2B51B3 #B32B51 #51B32B

tetradic

#2B51B3 #B32B95 #B38D2B #2BB349

square

#2B51B3 #B32B95 #B38D2B #2BB349

split-complementary

#2B51B3 #B3492B #95B32B

monochromatic

#132450 #1F3B82 #2B51B3 #486FD3 #7996DF

Accessibility & contrast

On white

7.17

#2B51B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#2B51B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B51B3

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B51B3	#FFFFFF	#000000	##FFFFFF
##2B51B3	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB6

Deuteranopia (green-blind)

#0052B1

Tritanopia (blue-blind)

#00697A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #2b51b3;
/* rgb */ color: rgb(43, 81, 179);
/* oklch */ color: oklch(46.7% 0.162 264.8);

Tailwind

colors: {
  custom: {
    50: '#7881ca',
    500: '#2b51b3',
    950: '#000000',
  },
}

SCSS

$custom: #2b51b3;
$custom-light: #7881ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2b51b3",
  "rgb": {
    "r": 43,
    "g": 81,
    "b": 179
  },
  "hsl": {
    "h": 223.235,
    "s": 61.261,
    "l": 43.529
  },
  "oklch": {
    "l": 0.46662,
    "c": 0.16199,
    "h": 264.8
  },
  "luminance": 0.09653
}

Semantic roles & 50–950 ramp

primary

#2B51B3

secondary

#C7AF73

accent

#B743E4

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2B51B3

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

Preview Lab → · Contrast checker → · Palette generator →