#1B3376#1B3376

#1B3376 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.5% C 0.119 H 265.6°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B3376
RGB	rgb(27, 51, 118)
HSL	hsl(224, 63%, 28%)
HSV	hsv(224, 77%, 46%)
CMYK	cmyk(77.1%, 56.8%, 0%, 53.7%)
CIE-LAB	lab(23.37, 16.47, -41.14)
CIE-LCH	lch(23.37, 44.32, 291.82°)
OKLab	oklab(34.53% -0.0091 -0.1185)
OKLCH	oklch(34.53% 0.119 265.6)
XYZ	xyz(4.9047, 3.9081, 17.6319)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3376 #765E1B

analogous

#1B6076 #1B3376 #301B76

triadic

#1B3376 #761B33 #33761B

tetradic

#1B3376 #761B60 #765E1B #1B7630

square

#1B3376 #761B60 #765E1B #1B7630

split-complementary

#1B3376 #76301B #60761B

monochromatic

#060B19 #101D44 #1B3376 #2649A8 #3A62D2

Accessibility & contrast

On white

11.79

#1B3376 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B3376 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3376

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3376	#FFFFFF	#000000	##FFFFFF
##1B3376	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C78

Deuteranopia (green-blind)

#003475

Tritanopia (blue-blind)

#00434F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b3376;
/* rgb */ color: rgb(27, 51, 118);
/* oklch */ color: oklch(34.5% 0.119 265.6);

Tailwind

colors: {
  custom: {
    50: '#666a9e',
    500: '#1b3376',
    950: '#000000',
  },
}

SCSS

$custom: #1b3376;
$custom-light: #666a9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3376",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 118
  },
  "hsl": {
    "h": 224.176,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.34534,
    "c": 0.11888,
    "h": 265.6
  },
  "luminance": 0.03909
}

Semantic roles & 50–950 ramp

primary

#1B3376

secondary

#AA8F42

accent

#BB42E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1B3376

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

Preview Lab → · Contrast checker → · Palette generator →