#1B478D#1B478D

#1B478D is a dark, vivid blue. Relative luminance 0.067; OKLCH L 40.9% C 0.126 H 259.5°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#1B478D
RGB	rgb(27, 71, 141)
HSL	hsl(217, 68%, 33%)
HSV	hsv(217, 81%, 55%)
CMYK	cmyk(80.9%, 49.6%, 0%, 44.7%)
CIE-LAB	lab(31.02, 11.88, -43.14)
CIE-LCH	lch(31.02, 44.74, 285.39°)
OKLab	oklab(40.92% -0.023 -0.124)
OKLCH	oklch(40.92% 0.126 259.5)
XYZ	xyz(7.5112, 6.6617, 26.0841)
Luminance	0.0666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B478D #8D611B

analogous

#1B808D #1B478D #281B8D

triadic

#1B478D #8D1B47 #478D1B

tetradic

#1B478D #8D1B80 #8D611B #1B8D28

square

#1B478D #8D1B80 #8D611B #1B8D28

split-complementary

#1B478D #8D281B #808D1B

monochromatic

#071326 #112D5A #1B478D #2561C0 #4780DC

Accessibility & contrast

On white

9.00

#1B478D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1B478D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B478D

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B478D	#FFFFFF	#000000	##FFFFFF
##1B478D	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4F90

Deuteranopia (green-blind)

#00448C

Tritanopia (blue-blind)

#005863

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b478d;
/* rgb */ color: rgb(27, 71, 141);
/* oklch */ color: oklch(40.9% 0.126 259.5);

Tailwind

colors: {
  custom: {
    50: '#6a79af',
    500: '#1b478d',
    950: '#000000',
  },
}

SCSS

$custom: #1b478d;
$custom-light: #6a79af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b478d",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 141
  },
  "hsl": {
    "h": 216.842,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.40915,
    "c": 0.12612,
    "h": 259.5
  },
  "luminance": 0.06663
}

Semantic roles & 50–950 ramp

primary

#1B478D

secondary

#BD8F46

accent

#A83DEB

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1B478D

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

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