#2B51BD#2B51BD

#2B51BD is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.5% C 0.176 H 265.4°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#2B51BD
RGB	rgb(43, 81, 189)
HSL	hsl(224, 63%, 45%)
HSV	hsv(224, 77%, 74%)
CMYK	cmyk(77.2%, 57.1%, 0%, 25.9%)
CIE-LAB	lab(37.97, 25.78, -60.62)
CIE-LCH	lch(37.97, 65.87, 293.04°)
OKLab	oklab(47.47% -0.0141 -0.175)
OKLCH	oklch(47.47% 0.176 265.4)
XYZ	xyz(13.1208, 10.0711, 49.3867)
Luminance	0.1007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B51BD #BD972B

analogous

#2B9ABD #2B51BD #4E2BBD

triadic

#2B51BD #BD2B51 #51BD2B

tetradic

#2B51BD #BD2B9A #BD972B #2BBD4E

square

#2B51BD #BD2B9A #BD972B #2BBD4E

split-complementary

#2B51BD #BD4E2B #9ABD2B

monochromatic

#142659 #203C8B #2B51BD #4E72D7 #809AE2

Accessibility & contrast

On white

6.97

#2B51BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#2B51BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2B51BD

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B51BD	#FFFFFF	#000000	##FFFFFF
##2B51BD	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C1

Deuteranopia (green-blind)

#0053BB

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #2b51bd;
/* rgb */ color: rgb(43, 81, 189);
/* oklch */ color: oklch(47.5% 0.176 265.4);

Tailwind

colors: {
  custom: {
    50: '#7b81d2',
    500: '#2b51bd',
    950: '#000000',
  },
}

SCSS

$custom: #2b51bd;
$custom-light: #7b81d2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b51bd",
  "rgb": {
    "r": 43,
    "g": 81,
    "b": 189
  },
  "hsl": {
    "h": 224.384,
    "s": 62.931,
    "l": 45.49
  },
  "oklch": {
    "l": 0.47473,
    "c": 0.17554,
    "h": 265.4
  },
  "luminance": 0.10073
}

Semantic roles & 50–950 ramp

primary

#2B51BD

secondary

#CBB679

accent

#BB42E6

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #2B51BD

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

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