#2B3DB1#2B3DB1

#2B3DB1 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.184 H 269.7°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#2B3DB1
RGB	rgb(43, 61, 177)
HSL	hsl(232, 61%, 43%)
HSV	hsv(232, 76%, 69%)
CMYK	cmyk(75.7%, 65.5%, 0%, 30.6%)
CIE-LAB	lab(31.86, 34.36, -63.51)
CIE-LCH	lch(31.86, 72.21, 298.41°)
OKLab	oklab(42.63% -0.0011 -0.1837)
OKLCH	oklch(42.63% 0.184 269.7)
XYZ	xyz(10.5981, 7.0243, 42.3837)
Luminance	0.0703 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3DB1 #B19F2B

analogous

#2B80B1 #2B3DB1 #5C2BB1

triadic

#2B3DB1 #B12B3D #3DB12B

tetradic

#2B3DB1 #B12B80 #B19F2B #2BB15C

square

#2B3DB1 #B12B80 #B19F2B #2BB15C

split-complementary

#2B3DB1 #B15C2B #80B12B

monochromatic

#131B4F #1F2C80 #2B3DB1 #475AD2 #7886DE

Accessibility & contrast

On white

8.73

#2B3DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#2B3DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3DB1

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3DB1	#FFFFFF	#000000	##FFFFFF
##2B3DB1	1.00	8.73	2.41	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B5

Deuteranopia (green-blind)

#0045AF

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2b3db1;
/* rgb */ color: rgb(43, 61, 177);
/* oklch */ color: oklch(42.6% 0.184 269.7);

Tailwind

colors: {
  custom: {
    50: '#7972c9',
    500: '#2b3db1',
    950: '#000000',
  },
}

SCSS

$custom: #2b3db1;
$custom-light: #7972c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3db1",
  "rgb": {
    "r": 43,
    "g": 61,
    "b": 177
  },
  "hsl": {
    "h": 231.94,
    "s": 60.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42628,
    "c": 0.1837,
    "h": 269.7
  },
  "luminance": 0.07025
}

Semantic roles & 50–950 ramp

primary

#2B3DB1

secondary

#C6BB72

accent

#CF44E4

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B3DB1

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

Preview Lab → · Contrast checker → · Palette generator →