#1B328A#1B328A

#1B328A is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.149 H 267.0°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B328A
RGB	rgb(27, 50, 138)
HSL	hsl(228, 67%, 32%)
HSV	hsv(228, 80%, 54%)
CMYK	cmyk(80.4%, 63.8%, 0%, 45.9%)
CIE-LAB	lab(24.79, 25.21, -51.40)
CIE-LCH	lch(24.79, 57.26, 296.13°)
OKLab	oklab(36.13% -0.0077 -0.1487)
OKLCH	oklch(36.13% 0.149 267)
XYZ	xyz(6.1784, 4.3485, 24.5535)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B328A #8A731B

analogous

#1B698A #1B328A #3C1B8A

triadic

#1B328A #8A1B32 #328A1B

tetradic

#1B328A #8A1B69 #8A731B #1B8A3C

square

#1B328A #8A1B69 #8A731B #1B8A3C

split-complementary

#1B328A #8A3C1B #698A1B

monochromatic

#070D24 #111F57 #1B328A #2545BD #4564DB

Accessibility & contrast

On white

11.23

#1B328A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1B328A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B328A

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B328A	#FFFFFF	#000000	##FFFFFF
##1B328A	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408D

Deuteranopia (green-blind)

#003688

Tritanopia (blue-blind)

#004959

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b328a;
/* rgb */ color: rgb(27, 50, 138);
/* oklch */ color: oklch(36.1% 0.149 267.0);

Tailwind

colors: {
  custom: {
    50: '#6b69ad',
    500: '#1b328a',
    950: '#000000',
  },
}

SCSS

$custom: #1b328a;
$custom-light: #6b69ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b328a",
  "rgb": {
    "r": 27,
    "g": 50,
    "b": 138
  },
  "hsl": {
    "h": 227.568,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.36133,
    "c": 0.14888,
    "h": 267
  },
  "luminance": 0.04349
}

Semantic roles & 50–950 ramp

primary

#1B328A

secondary

#BCA345

accent

#C63EEA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1B328A

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

Preview Lab → · Contrast checker → · Palette generator →