#1B348D#1B348D

#1B348D is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.8% C 0.151 H 266.6°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B348D
RGB	rgb(27, 52, 141)
HSL	hsl(227, 68%, 33%)
HSV	hsv(227, 81%, 55%)
CMYK	cmyk(80.9%, 63.1%, 0%, 44.7%)
CIE-LAB	lab(25.60, 25.02, -51.95)
CIE-LCH	lch(25.60, 57.66, 295.72°)
OKLab	oklab(36.81% -0.009 -0.1502)
OKLCH	oklch(36.81% 0.151 266.6)
XYZ	xyz(6.4860, 4.6113, 25.7424)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B348D #8D741B

analogous

#1B6D8D #1B348D #3B1B8D

triadic

#1B348D #8D1B34 #348D1B

tetradic

#1B348D #8D1B6D #8D741B #1B8D3B

square

#1B348D #8D1B6D #8D741B #1B8D3B

split-complementary

#1B348D #8D3B1B #6D8D1B

monochromatic

#070E26 #11215A #1B348D #2547C0 #4767DC

Accessibility & contrast

On white

10.92

#1B348D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1B348D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B348D

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B348D	#FFFFFF	#000000	##FFFFFF
##1B348D	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004290

Deuteranopia (green-blind)

#00378B

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b348d;
/* rgb */ color: rgb(27, 52, 141);
/* oklch */ color: oklch(36.8% 0.151 266.6);

Tailwind

colors: {
  custom: {
    50: '#6c6baf',
    500: '#1b348d',
    950: '#000000',
  },
}

SCSS

$custom: #1b348d;
$custom-light: #6c6baf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b348d",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 141
  },
  "hsl": {
    "h": 226.842,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.36814,
    "c": 0.15052,
    "h": 266.6
  },
  "luminance": 0.04612
}

Semantic roles & 50–950 ramp

primary

#1B348D

secondary

#BDA346

accent

#C53DEB

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1B348D

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

Preview Lab → · Contrast checker → · Palette generator →