#1B327F#1B327F

#1B327F is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.1% C 0.133 H 266.6°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B327F
RGB	rgb(27, 50, 127)
HSL	hsl(226, 65%, 30%)
HSV	hsv(226, 79%, 50%)
CMYK	cmyk(78.7%, 60.6%, 0%, 50.2%)
CIE-LAB	lab(23.82, 20.83, -46.10)
CIE-LCH	lch(23.82, 50.59, 294.31°)
OKLab	oklab(35.11% -0.0079 -0.1331)
OKLCH	oklch(35.11% 0.133 266.6)
XYZ	xyz(5.4220, 4.0459, 20.5697)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B327F #7F681B

analogous

#1B647F #1B327F #361B7F

triadic

#1B327F #7F1B32 #327F1B

tetradic

#1B327F #7F1B64 #7F681B #1B7F36

square

#1B327F #7F1B64 #7F681B #1B7F36

split-complementary

#1B327F #7F361B #647F1B

monochromatic

#060A1A #101E4D #1B327F #2646B1 #3E61D6

Accessibility & contrast

On white

11.61

#1B327F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1B327F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B327F

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B327F	#FFFFFF	#000000	##FFFFFF
##1B327F	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D82

Deuteranopia (green-blind)

#00347E

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b327f;
/* rgb */ color: rgb(27, 50, 127);
/* oklch */ color: oklch(35.1% 0.133 266.6);

Tailwind

colors: {
  custom: {
    50: '#6869a5',
    500: '#1b327f',
    950: '#000000',
  },
}

SCSS

$custom: #1b327f;
$custom-light: #6869a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b327f",
  "rgb": {
    "r": 27,
    "g": 50,
    "b": 127
  },
  "hsl": {
    "h": 226.2,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.35111,
    "c": 0.13334,
    "h": 266.6
  },
  "luminance": 0.04047
}

Semantic roles & 50–950 ramp

primary

#1B327F

secondary

#B39943

accent

#C140E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B327F

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

Preview Lab → · Contrast checker → · Palette generator →