#1B327B#1B327B

#1B327B is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.8% C 0.128 H 266.4°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#1B327B
RGB	rgb(27, 50, 123)
HSL	hsl(226, 64%, 29%)
HSV	hsv(226, 78%, 48%)
CMYK	cmyk(78%, 59.3%, 0%, 51.8%)
CIE-LAB	lab(23.48, 19.21, -44.12)
CIE-LCH	lch(23.48, 48.12, 293.53°)
OKLab	oklab(34.75% -0.008 -0.1273)
OKLCH	oklch(34.75% 0.128 266.4)
XYZ	xyz(5.1665, 3.9437, 19.2240)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B327B #7B641B

analogous

#1B627B #1B327B #341B7B

triadic

#1B327B #7B1B32 #327B1B

tetradic

#1B327B #7B1B62 #7B641B #1B7B34

square

#1B327B #7B1B62 #7B641B #1B7B34

split-complementary

#1B327B #7B341B #627B1B

monochromatic

#060A19 #101E49 #1B327B #2646AD #3C61D4

Accessibility & contrast

On white

11.74

#1B327B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1B327B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B327B

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B327B	#FFFFFF	#000000	##FFFFFF
##1B327B	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7D

Deuteranopia (green-blind)

#00347A

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b327b;
/* rgb */ color: rgb(27, 50, 123);
/* oklch */ color: oklch(34.8% 0.128 266.4);

Tailwind

colors: {
  custom: {
    50: '#6769a2',
    500: '#1b327b',
    950: '#000000',
  },
}

SCSS

$custom: #1b327b;
$custom-light: #6769a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b327b",
  "rgb": {
    "r": 27,
    "g": 50,
    "b": 123
  },
  "hsl": {
    "h": 225.625,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.34752,
    "c": 0.12756,
    "h": 266.4
  },
  "luminance": 0.03944
}

Semantic roles & 50–950 ramp

primary

#1B327B

secondary

#AF9543

accent

#BF41E7

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B327B

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

Preview Lab → · Contrast checker → · Palette generator →