#1D355B#1D355B

#1D355B is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.0% C 0.074 H 259.2°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#1D355B
RGB	rgb(29, 53, 91)
HSL	hsl(217, 52%, 24%)
HSV	hsv(217, 68%, 36%)
CMYK	cmyk(68.1%, 41.8%, 0%, 64.3%)
CIE-LAB	lab(22.17, 4.44, -25.59)
CIE-LCH	lch(22.17, 25.97, 279.84°)
OKLab	oklab(33.03% -0.0138 -0.0727)
OKLCH	oklch(33.03% 0.074 259.2)
XYZ	xyz(3.6675, 3.5624, 10.3898)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D355B #5B431D

analogous

#1D545B #1D355B #241D5B

triadic

#1D355B #5B1D35 #355B1D

tetradic

#1D355B #5B1D54 #5B431D #1D5B24

square

#1D355B #5B1D54 #5B431D #1D5B24

split-complementary

#1D355B #5B241D #545B1D

monochromatic

#070E17 #0E1A2D #1D355B #2C5089 #3B6BB8

Accessibility & contrast

On white

12.26

#1D355B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1D355B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D355B

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D355B	#FFFFFF	#000000	##FFFFFF
##1D355B	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24385D

Deuteranopia (green-blind)

#1C325A

Tritanopia (blue-blind)

#003E43

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1d355b;
/* rgb */ color: rgb(29, 53, 91);
/* oklch */ color: oklch(33.0% 0.074 259.2);

Tailwind

colors: {
  custom: {
    50: '#606b89',
    500: '#1d355b',
    950: '#000000',
  },
}

SCSS

$custom: #1d355b;
$custom-light: #606b89;
$custom-dark: #000000;

JSON

{
  "hex": "#1d355b",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 91
  },
  "hsl": {
    "h": 216.774,
    "s": 51.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33031,
    "c": 0.07403,
    "h": 259.2
  },
  "luminance": 0.03563
}

Semantic roles & 50–950 ramp

primary

#1D355B

secondary

#907344

accent

#A44DDB

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #1D355B

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

Preview Lab → · Contrast checker → · Palette generator →