#1B328B#1B328B

#1B328B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.2% C 0.150 H 267.0°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B328B
RGB	rgb(27, 50, 139)
HSL	hsl(228, 67%, 33%)
HSV	hsv(228, 81%, 55%)
CMYK	cmyk(80.6%, 64%, 0%, 45.5%)
CIE-LAB	lab(24.88, 25.61, -51.88)
CIE-LCH	lch(24.88, 57.85, 296.27°)
OKLab	oklab(36.23% -0.0078 -0.1501)
OKLCH	oklch(36.23% 0.15 267)
XYZ	xyz(6.2512, 4.3776, 24.9366)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B328B #8B741B

analogous

#1B6A8B #1B328B #3C1B8B

triadic

#1B328B #8B1B32 #328B1B

tetradic

#1B328B #8B1B6A #8B741B #1B8B3C

square

#1B328B #8B1B6A #8B741B #1B8B3C

split-complementary

#1B328B #8B3C1B #6A8B1B

monochromatic

#070D25 #112058 #1B328B #2544BE #4564DB

Accessibility & contrast

On white

11.20

#1B328B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1B328B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B328B

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B328B	#FFFFFF	#000000	##FFFFFF
##1B328B	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004959

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b328b;
/* rgb */ color: rgb(27, 50, 139);
/* oklch */ color: oklch(36.2% 0.150 267.0);

Tailwind

colors: {
  custom: {
    50: '#6b69ae',
    500: '#1b328b',
    950: '#000000',
  },
}

SCSS

$custom: #1b328b;
$custom-light: #6b69ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b328b",
  "rgb": {
    "r": 27,
    "g": 50,
    "b": 139
  },
  "hsl": {
    "h": 227.679,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.36228,
    "c": 0.15026,
    "h": 267
  },
  "luminance": 0.04378
}

Semantic roles & 50–950 ramp

primary

#1B328B

secondary

#BCA445

accent

#C73DEA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1B328B

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

Preview Lab → · Contrast checker → · Palette generator →