#2B3DB4#2B3DB4

#2B3DB4 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.188 H 269.6°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#2B3DB4
RGB	rgb(43, 61, 180)
HSL	hsl(232, 61%, 44%)
HSV	hsv(232, 76%, 71%)
CMYK	cmyk(76.1%, 66.1%, 0%, 29.4%)
CIE-LAB	lab(32.14, 35.45, -64.84)
CIE-LCH	lch(32.14, 73.90, 298.66°)
OKLab	oklab(42.91% -0.0013 -0.1876)
OKLCH	oklch(42.91% 0.188 269.6)
XYZ	xyz(10.9004, 7.1452, 43.9758)
Luminance	0.0715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3DB4 #B4A22B

analogous

#2B81B4 #2B3DB4 #5D2BB4

triadic

#2B3DB4 #B42B3D #3DB42B

tetradic

#2B3DB4 #B42B81 #B4A22B #2BB45D

square

#2B3DB4 #B42B81 #B4A22B #2BB45D

split-complementary

#2B3DB4 #B45D2B #81B42B

monochromatic

#131C51 #1F2C83 #2B3DB4 #495BD3 #7A87DF

Accessibility & contrast

On white

8.64

#2B3DB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#2B3DB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3DB4

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3DB4	#FFFFFF	#000000	##FFFFFF
##2B3DB4	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B8

Deuteranopia (green-blind)

#0045B2

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2b3db4;
/* rgb */ color: rgb(43, 61, 180);
/* oklch */ color: oklch(42.9% 0.188 269.6);

Tailwind

colors: {
  custom: {
    50: '#7a72cc',
    500: '#2b3db4',
    950: '#000000',
  },
}

SCSS

$custom: #2b3db4;
$custom-light: #7a72cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3db4",
  "rgb": {
    "r": 43,
    "g": 61,
    "b": 180
  },
  "hsl": {
    "h": 232.117,
    "s": 61.435,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42912,
    "c": 0.1876,
    "h": 269.6
  },
  "luminance": 0.07146
}

Semantic roles & 50–950 ramp

primary

#2B3DB4

secondary

#C7BC73

accent

#CF43E5

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B3DB4

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

Preview Lab → · Contrast checker → · Palette generator →