#2B3BB4#2B3BB4

#2B3BB4 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.6% C 0.190 H 270.0°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#2B3BB4
RGB	rgb(43, 59, 180)
HSL	hsl(233, 61%, 44%)
HSV	hsv(233, 76%, 71%)
CMYK	cmyk(76.1%, 67.2%, 0%, 29.4%)
CIE-LAB	lab(31.66, 36.71, -65.63)
CIE-LCH	lch(31.66, 75.20, 299.22°)
OKLab	oklab(42.57% -0.0001 -0.1899)
OKLCH	oklch(42.57% 0.19 270)
XYZ	xyz(10.7956, 6.9356, 43.9409)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3BB4 #B4A42B

analogous

#2B7FB4 #2B3BB4 #5F2BB4

triadic

#2B3BB4 #B42B3B #3BB42B

tetradic

#2B3BB4 #B42B7F #B4A42B #2BB45F

square

#2B3BB4 #B42B7F #B4A42B #2BB45F

split-complementary

#2B3BB4 #B45F2B #7FB42B

monochromatic

#131B51 #1F2B83 #2B3BB4 #4959D3 #7A86DF

Accessibility & contrast

On white

8.80

#2B3BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#2B3BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3BB4

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3BB4	#FFFFFF	#000000	##FFFFFF
##2B3BB4	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B8

Deuteranopia (green-blind)

#0044B2

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2b3bb4;
/* rgb */ color: rgb(43, 59, 180);
/* oklch */ color: oklch(42.6% 0.190 270.0);

Tailwind

colors: {
  custom: {
    50: '#7a71cc',
    500: '#2b3bb4',
    950: '#000000',
  },
}

SCSS

$custom: #2b3bb4;
$custom-light: #7a71cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3bb4",
  "rgb": {
    "r": 43,
    "g": 59,
    "b": 180
  },
  "hsl": {
    "h": 232.993,
    "s": 61.435,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42565,
    "c": 0.18989,
    "h": 270
  },
  "luminance": 0.06937
}

Semantic roles & 50–950 ramp

primary

#2B3BB4

secondary

#C7BE73

accent

#D243E5

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2B3BB4

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

Preview Lab → · Contrast checker → · Palette generator →