#1B478A#1B478A

#1B478A is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.7% C 0.122 H 258.9°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B478A
RGB	rgb(27, 71, 138)
HSL	hsl(216, 67%, 32%)
HSV	hsv(216, 80%, 54%)
CMYK	cmyk(80.4%, 48.6%, 0%, 45.9%)
CIE-LAB	lab(30.82, 10.66, -41.63)
CIE-LCH	lch(30.82, 42.97, 284.36°)
OKLab	oklab(40.69% -0.0235 -0.1196)
OKLCH	oklch(40.69% 0.122 258.9)
XYZ	xyz(7.2910, 6.5736, 24.9244)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B478A #8A5E1B

analogous

#1B7F8A #1B478A #261B8A

triadic

#1B478A #8A1B47 #478A1B

tetradic

#1B478A #8A1B7F #8A5E1B #1B8A26

square

#1B478A #8A1B7F #8A5E1B #1B8A26

split-complementary

#1B478A #8A261B #7F8A1B

monochromatic

#071224 #112D57 #1B478A #2561BD #4580DB

Accessibility & contrast

On white

9.07

#1B478A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B478A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B478A

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B478A	#FFFFFF	#000000	##FFFFFF
##1B478A	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224E8C

Deuteranopia (green-blind)

#014489

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b478a;
/* rgb */ color: rgb(27, 71, 138);
/* oklch */ color: oklch(40.7% 0.122 258.9);

Tailwind

colors: {
  custom: {
    50: '#6a79ad',
    500: '#1b478a',
    950: '#000000',
  },
}

SCSS

$custom: #1b478a;
$custom-light: #6a79ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b478a",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 138
  },
  "hsl": {
    "h": 216.216,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.40688,
    "c": 0.12184,
    "h": 258.9
  },
  "luminance": 0.06574
}

Semantic roles & 50–950 ramp

primary

#1B478A

secondary

#BC8D45

accent

#A63EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B478A

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

Preview Lab → · Contrast checker → · Palette generator →