#2B4B9B#2B4B9B

#2B4B9B is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.5% C 0.136 H 264.9°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#2B4B9B
RGB	rgb(43, 75, 155)
HSL	hsl(223, 57%, 39%)
HSV	hsv(223, 72%, 61%)
CMYK	cmyk(72.3%, 51.6%, 0%, 39.2%)
CIE-LAB	lab(33.80, 16.80, -47.16)
CIE-LCH	lch(33.80, 50.06, 289.61°)
OKLab	oklab(43.52% -0.0122 -0.1355)
OKLCH	oklch(43.52% 0.136 264.9)
XYZ	xyz(9.4267, 7.9113, 32.0342)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B4B9B #9B7B2B

analogous

#2B839B #2B4B9B #432B9B

triadic

#2B4B9B #9B2B4B #4B9B2B

tetradic

#2B4B9B #9B2B83 #9B7B2B #2B9B43

square

#2B4B9B #9B2B83 #9B7B2B #2B9B43

split-complementary

#2B4B9B #9B432B #839B2B

monochromatic

#101D3B #1E346B #2B4B9B #3B63C9 #6B89D6

Accessibility & contrast

On white

8.13

#2B4B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#2B4B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B4B9B

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B4B9B	#FFFFFF	#000000	##FFFFFF
##2B4B9B	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A559E

Deuteranopia (green-blind)

#004B99

Tritanopia (blue-blind)

#005E6B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2b4b9b;
/* rgb */ color: rgb(43, 75, 155);
/* oklch */ color: oklch(43.5% 0.136 264.9);

Tailwind

colors: {
  custom: {
    50: '#737cb9',
    500: '#2b4b9b',
    950: '#000000',
  },
}

SCSS

$custom: #2b4b9b;
$custom-light: #737cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b4b9b",
  "rgb": {
    "r": 43,
    "g": 75,
    "b": 155
  },
  "hsl": {
    "h": 222.857,
    "s": 56.566,
    "l": 38.824
  },
  "oklch": {
    "l": 0.43522,
    "c": 0.13605,
    "h": 264.9
  },
  "luminance": 0.07912
}

Semantic roles & 50–950 ramp

primary

#2B4B9B

secondary

#BCA465

accent

#B448E0

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #2B4B9B

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

Preview Lab → · Contrast checker → · Palette generator →