#2B3A8D#2B3A8D

#2B3A8D is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.138 H 270.8°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#2B3A8D
RGB	rgb(43, 58, 141)
HSL	hsl(231, 53%, 36%)
HSV	hsv(231, 70%, 55%)
CMYK	cmyk(69.5%, 58.9%, 0%, 44.7%)
CIE-LAB	lab(28.01, 22.98, -47.98)
CIE-LCH	lch(28.01, 53.19, 295.59°)
OKLab	oklab(38.83% 0.0019 -0.1382)
OKLCH	oklch(38.83% 0.138 270.8)
XYZ	xyz(7.3154, 5.4621, 25.8629)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3A8D #8D7E2B

analogous

#2B6B8D #2B3A8D #4D2B8D

triadic

#2B3A8D #8D2B3A #3A8D2B

tetradic

#2B3A8D #8D2B6B #8D7E2B #2B8D4D

square

#2B3A8D #8D2B6B #8D7E2B #2B8D4D

split-complementary

#2B3A8D #8D4D2B #6B8D2B

monochromatic

#0E132F #1D275E #2B3A8D #394DBC #6374CF

Accessibility & contrast

On white

10.04

#2B3A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#2B3A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3A8D

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3A8D	#FFFFFF	#000000	##FFFFFF
##2B3A8D	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2b3a8d;
/* rgb */ color: rgb(43, 58, 141);
/* oklch */ color: oklch(38.8% 0.138 270.8);

Tailwind

colors: {
  custom: {
    50: '#7170af',
    500: '#2b3a8d',
    950: '#000000',
  },
}

SCSS

$custom: #2b3a8d;
$custom-light: #7170af;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3a8d",
  "rgb": {
    "r": 43,
    "g": 58,
    "b": 141
  },
  "hsl": {
    "h": 230.816,
    "s": 53.261,
    "l": 36.078
  },
  "oklch": {
    "l": 0.38828,
    "c": 0.13817,
    "h": 270.8
  },
  "luminance": 0.05463
}

Semantic roles & 50–950 ramp

primary

#2B3A8D

secondary

#B6A85E

accent

#C64BDD

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #2B3A8D

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

Preview Lab → · Contrast checker → · Palette generator →