#2B3FB4#2B3FB4

#2B3FB4 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.185 H 269.2°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#2B3FB4
RGB	rgb(43, 63, 180)
HSL	hsl(231, 61%, 44%)
HSV	hsv(231, 76%, 71%)
CMYK	cmyk(76.1%, 65%, 0%, 29.4%)
CIE-LAB	lab(32.62, 34.17, -64.05)
CIE-LCH	lch(32.62, 72.59, 298.08°)
OKLab	oklab(43.27% -0.0025 -0.1853)
OKLCH	oklch(43.27% 0.185 269.2)
XYZ	xyz(11.0092, 7.3627, 44.0121)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3FB4 #B4A02B

analogous

#2B83B4 #2B3FB4 #5B2BB4

triadic

#2B3FB4 #B42B3F #3FB42B

tetradic

#2B3FB4 #B42B83 #B4A02B #2BB45B

square

#2B3FB4 #B42B83 #B4A02B #2BB45B

split-complementary

#2B3FB4 #B45B2B #83B42B

monochromatic

#131C51 #1F2E83 #2B3FB4 #495DD3 #7A89DF

Accessibility & contrast

On white

8.49

#2B3FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#2B3FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3FB4

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3FB4	#FFFFFF	#000000	##FFFFFF
##2B3FB4	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0046B2

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2b3fb4;
/* rgb */ color: rgb(43, 63, 180);
/* oklch */ color: oklch(43.3% 0.185 269.2);

Tailwind

colors: {
  custom: {
    50: '#7a74cb',
    500: '#2b3fb4',
    950: '#000000',
  },
}

SCSS

$custom: #2b3fb4;
$custom-light: #7a74cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3fb4",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 180
  },
  "hsl": {
    "h": 231.241,
    "s": 61.435,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43266,
    "c": 0.18529,
    "h": 269.2
  },
  "luminance": 0.07364
}

Semantic roles & 50–950 ramp

primary

#2B3FB4

secondary

#C7BB73

accent

#CD43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B3FB4

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

Preview Lab → · Contrast checker → · Palette generator →