#2B51B9#2B51B9

#2B51B9 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.1% C 0.170 H 265.2°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#2B51B9
RGB	rgb(43, 81, 185)
HSL	hsl(224, 62%, 45%)
HSV	hsv(224, 77%, 73%)
CMYK	cmyk(76.8%, 56.2%, 0%, 27.5%)
CIE-LAB	lab(37.66, 24.27, -58.77)
CIE-LCH	lch(37.66, 63.58, 292.44°)
OKLab	oklab(47.15% -0.0143 -0.1695)
OKLCH	oklch(47.15% 0.17 265.2)
XYZ	xyz(12.6926, 9.8998, 47.1314)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B51B9 #B9932B

analogous

#2B98B9 #2B51B9 #4C2BB9

triadic

#2B51B9 #B92B51 #51B92B

tetradic

#2B51B9 #B92B98 #B9932B #2BB94C

square

#2B51B9 #B92B98 #B9932B #2BB94C

split-complementary

#2B51B9 #B94C2B #98B92B

monochromatic

#142656 #1F3B87 #2B51B9 #4C71D5 #7E98E1

Accessibility & contrast

On white

7.05

#2B51B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#2B51B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B51B9

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B51B9	#FFFFFF	#000000	##FFFFFF
##2B51B9	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBD

Deuteranopia (green-blind)

#0052B7

Tritanopia (blue-blind)

#006B7D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2b51b9;
/* rgb */ color: rgb(43, 81, 185);
/* oklch */ color: oklch(47.1% 0.170 265.2);

Tailwind

colors: {
  custom: {
    50: '#7a81cf',
    500: '#2b51b9',
    950: '#000000',
  },
}

SCSS

$custom: #2b51b9;
$custom-light: #7a81cf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b51b9",
  "rgb": {
    "r": 43,
    "g": 81,
    "b": 185
  },
  "hsl": {
    "h": 223.944,
    "s": 62.281,
    "l": 44.706
  },
  "oklch": {
    "l": 0.47145,
    "c": 0.17016,
    "h": 265.2
  },
  "luminance": 0.09901
}

Semantic roles & 50–950 ramp

primary

#2B51B9

secondary

#C9B376

accent

#BA42E5

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #2B51B9

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

Preview Lab → · Contrast checker → · Palette generator →