#1D355A#1D355A

#1D355A is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.0% C 0.072 H 258.8°. Best body text is #FFFFFF at 12.29:1 contrast (WCAG AA passes).

Color values

HEX	#1D355A
RGB	rgb(29, 53, 90)
HSL	hsl(216, 51%, 23%)
HSV	hsv(216, 68%, 35%)
CMYK	cmyk(67.8%, 41.1%, 0%, 64.7%)
CIE-LAB	lab(22.11, 4.04, -25.02)
CIE-LCH	lch(22.11, 25.35, 279.17°)
OKLab	oklab(32.96% -0.0141 -0.0711)
OKLCH	oklch(32.96% 0.072 258.8)
XYZ	xyz(3.6246, 3.5453, 10.1642)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D355A #5A421D

analogous

#1D535A #1D355A #231D5A

triadic

#1D355A #5A1D35 #355A1D

tetradic

#1D355A #5A1D53 #5A421D #1D5A23

square

#1D355A #5A1D53 #5A421D #1D5A23

split-complementary

#1D355A #5A231D #535A1D

monochromatic

#070E17 #0E1A2C #1D355A #2C5088 #3B6CB7

Accessibility & contrast

On white

12.29

#1D355A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1D355A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D355A

12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D355A	#FFFFFF	#000000	##FFFFFF
##1D355A	1.00	12.29	1.71	12.29
#FFFFFF	12.29	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25385B

Deuteranopia (green-blind)

#1C3259

Tritanopia (blue-blind)

#003D43

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1d355a;
/* rgb */ color: rgb(29, 53, 90);
/* oklch */ color: oklch(33.0% 0.072 258.8);

Tailwind

colors: {
  custom: {
    50: '#606b89',
    500: '#1d355a',
    950: '#000000',
  },
}

SCSS

$custom: #1d355a;
$custom-light: #606b89;
$custom-dark: #000000;

JSON

{
  "hex": "#1d355a",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 90
  },
  "hsl": {
    "h": 216.393,
    "s": 51.261,
    "l": 23.333
  },
  "oklch": {
    "l": 0.32963,
    "c": 0.07247,
    "h": 258.8
  },
  "luminance": 0.03546
}

Semantic roles & 50–950 ramp

primary

#1D355A

secondary

#8F7144

accent

#A34DDB

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #1D355A

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

Preview Lab → · Contrast checker → · Palette generator →