#1B4499#1B4499

#1B4499 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.2% C 0.147 H 262.5°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#1B4499
RGB	rgb(27, 68, 153)
HSL	hsl(220, 70%, 35%)
HSV	hsv(220, 82%, 60%)
CMYK	cmyk(82.4%, 55.6%, 0%, 40%)
CIE-LAB	lab(31.03, 18.80, -50.45)
CIE-LCH	lch(31.03, 53.84, 290.43°)
OKLab	oklab(41.2% -0.0192 -0.1456)
OKLCH	oklch(41.2% 0.147 262.5)
XYZ	xyz(8.2668, 6.6662, 30.9818)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4499 #99701B

analogous

#1B8399 #1B4499 #311B99

triadic

#1B4499 #991B44 #44991B

tetradic

#1B4499 #991B83 #99701B #1B9931

square

#1B4499 #991B83 #99701B #1B9931

split-complementary

#1B4499 #99311B #83991B

monochromatic

#091631 #122D65 #1B4499 #245BCD #4F7EE0

Accessibility & contrast

On white

9.00

#1B4499 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1B4499 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4499

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4499	#FFFFFF	#000000	##FFFFFF
##1B4499	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)

#004F9C

Deuteranopia (green-blind)

#004497

Tritanopia (blue-blind)

#005967

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4499;
/* rgb */ color: rgb(27, 68, 153);
/* oklch */ color: oklch(41.2% 0.147 262.5);

Tailwind

colors: {
  custom: {
    50: '#6e77b8',
    500: '#1b4499',
    950: '#000000',
  },
}

SCSS

$custom: #1b4499;
$custom-light: #6e77b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4499",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 153
  },
  "hsl": {
    "h": 220.476,
    "s": 70,
    "l": 35.294
  },
  "oklch": {
    "l": 0.41204,
    "c": 0.14685,
    "h": 262.5
  },
  "luminance": 0.06667
}

Semantic roles & 50–950 ramp

primary

#1B4499

secondary

#C29C4E

accent

#B33BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4499

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

Preview Lab → · Contrast checker → · Palette generator →