#2B3EB1#2B3EB1

#2B3EB1 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.183 H 269.5°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#2B3EB1
RGB	rgb(43, 62, 177)
HSL	hsl(231, 61%, 43%)
HSV	hsv(231, 76%, 69%)
CMYK	cmyk(75.7%, 65%, 0%, 30.6%)
CIE-LAB	lab(32.11, 33.71, -63.11)
CIE-LCH	lch(32.11, 71.55, 298.11°)
OKLab	oklab(42.81% -0.0017 -0.1825)
OKLCH	oklch(42.81% 0.183 269.5)
XYZ	xyz(10.6520, 7.1320, 42.4017)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3EB1 #B19E2B

analogous

#2B81B1 #2B3EB1 #5B2BB1

triadic

#2B3EB1 #B12B3E #3EB12B

tetradic

#2B3EB1 #B12B81 #B19E2B #2BB15B

square

#2B3EB1 #B12B81 #B19E2B #2BB15B

split-complementary

#2B3EB1 #B15B2B #81B12B

monochromatic

#131C4F #1F2D80 #2B3EB1 #475BD2 #7887DE

Accessibility & contrast

On white

8.65

#2B3EB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#2B3EB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3EB1

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3EB1	#FFFFFF	#000000	##FFFFFF
##2B3EB1	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0045AF

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2b3eb1;
/* rgb */ color: rgb(43, 62, 177);
/* oklch */ color: oklch(42.8% 0.183 269.5);

Tailwind

colors: {
  custom: {
    50: '#7973c9',
    500: '#2b3eb1',
    950: '#000000',
  },
}

SCSS

$custom: #2b3eb1;
$custom-light: #7973c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3eb1",
  "rgb": {
    "r": 43,
    "g": 62,
    "b": 177
  },
  "hsl": {
    "h": 231.493,
    "s": 60.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42807,
    "c": 0.18253,
    "h": 269.5
  },
  "luminance": 0.07133
}

Semantic roles & 50–950 ramp

primary

#2B3EB1

secondary

#C6BA72

accent

#CD44E4

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B3EB1

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

Preview Lab → · Contrast checker → · Palette generator →