#1B345D#1B345D

#1B345D is a dark, moderate blue. Relative luminance 0.035; OKLCH L 32.8% C 0.079 H 259.8°. Best body text is #FFFFFF at 12.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B345D
RGB	rgb(27, 52, 93)
HSL	hsl(217, 55%, 24%)
HSV	hsv(217, 71%, 36%)
CMYK	cmyk(71%, 44.1%, 0%, 63.5%)
CIE-LAB	lab(21.87, 5.54, -27.38)
CIE-LCH	lch(21.87, 27.94, 281.44°)
OKLab	oklab(32.81% -0.0141 -0.078)
OKLCH	oklch(32.81% 0.079 259.8)
XYZ	xyz(3.6551, 3.4790, 10.8327)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B345D #5D441B

analogous

#1B555D #1B345D #231B5D

triadic

#1B345D #5D1B34 #345D1B

tetradic

#1B345D #5D1B55 #5D441B #1B5D23

square

#1B345D #5D1B55 #5D441B #1B5D23

split-complementary

#1B345D #5D231B #555D1B

monochromatic

#070D18 #0D192E #1B345D #294F8C #3769BC

Accessibility & contrast

On white

12.38

#1B345D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B345D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B345D

12.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B345D	#FFFFFF	#000000	##FFFFFF
##1B345D	1.00	12.38	1.70	12.38
#FFFFFF	12.38	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21385F

Deuteranopia (green-blind)

#17325C

Tritanopia (blue-blind)

#003D44

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b345d;
/* rgb */ color: rgb(27, 52, 93);
/* oklch */ color: oklch(32.8% 0.079 259.8);

Tailwind

colors: {
  custom: {
    50: '#606b8b',
    500: '#1b345d',
    950: '#000000',
  },
}

SCSS

$custom: #1b345d;
$custom-light: #606b8b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b345d",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 93
  },
  "hsl": {
    "h": 217.273,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.32811,
    "c": 0.07931,
    "h": 259.8
  },
  "luminance": 0.03479
}

Semantic roles & 50–950 ramp

primary

#1B345D

secondary

#937441

accent

#A649DE

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #1B345D

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

Preview Lab → · Contrast checker → · Palette generator →