#2B3799#2B3799

#2B3799 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.3% C 0.159 H 271.5°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#2B3799
RGB	rgb(43, 55, 153)
HSL	hsl(233, 56%, 38%)
HSV	hsv(233, 72%, 60%)
CMYK	cmyk(71.9%, 64.1%, 0%, 40%)
CIE-LAB	lab(28.23, 29.46, -54.98)
CIE-LCH	lch(28.23, 62.38, 298.18°)
OKLab	oklab(39.31% 0.0042 -0.1588)
OKLCH	oklch(39.31% 0.159 271.5)
XYZ	xyz(8.1103, 5.5451, 30.7737)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3799 #998D2B

analogous

#2B6E99 #2B3799 #562B99

triadic

#2B3799 #992B37 #37992B

tetradic

#2B3799 #992B6E #998D2B #2B9956

square

#2B3799 #992B6E #998D2B #2B9956

split-complementary

#2B3799 #99562B #6E992B

monochromatic

#101539 #1E2669 #2B3799 #3A49C8 #6975D5

Accessibility & contrast

On white

9.96

#2B3799 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#2B3799 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3799

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3799	#FFFFFF	#000000	##FFFFFF
##2B3799	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#005062

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2b3799;
/* rgb */ color: rgb(43, 55, 153);
/* oklch */ color: oklch(39.3% 0.159 271.5);

Tailwind

colors: {
  custom: {
    50: '#746db8',
    500: '#2b3799',
    950: '#000000',
  },
}

SCSS

$custom: #2b3799;
$custom-light: #746db8;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3799",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 153
  },
  "hsl": {
    "h": 233.455,
    "s": 56.122,
    "l": 38.431
  },
  "oklch": {
    "l": 0.39307,
    "c": 0.15883,
    "h": 271.5
  },
  "luminance": 0.05546
}

Semantic roles & 50–950 ramp

primary

#2B3799

secondary

#BCB264

accent

#CF48DF

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #2B3799

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

Preview Lab → · Contrast checker → · Palette generator →