#1D3E53#1D3E53

#1D3E53 is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.053 H 238.8°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E53
RGB	rgb(29, 62, 83)
HSL	hsl(203, 48%, 22%)
HSV	hsv(203, 65%, 33%)
CMYK	cmyk(65.1%, 25.3%, 0%, 67.5%)
CIE-LAB	lab(24.74, -4.76, -16.30)
CIE-LCH	lch(24.74, 16.98, 253.71°)
OKLab	oklab(34.9% -0.0277 -0.0457)
OKLCH	oklch(34.9% 0.053 238.8)
XYZ	xyz(3.7901, 4.3306, 8.8181)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E53 #53321D

analogous

#1D534D #1D3E53 #1D2353

triadic

#1D3E53 #531D3E #3E531D

tetradic

#1D3E53 #4D1D53 #53321D #23531D

square

#1D3E53 #4D1D53 #53321D #23531D

split-complementary

#1D3E53 #531D23 #534D1D

monochromatic

#081117 #0D1C26 #1D3E53 #2D6080 #3D82AE

Accessibility & contrast

On white

11.25

#1D3E53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D3E53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E53

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E53	#FFFFFF	#000000	##FFFFFF
##1D3E53	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343E54

Deuteranopia (green-blind)

#2D3853

Tritanopia (blue-blind)

#004345

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d3e53;
/* rgb */ color: rgb(29, 62, 83);
/* oklch */ color: oklch(34.9% 0.053 238.8);

Tailwind

colors: {
  custom: {
    50: '#5f7383',
    500: '#1d3e53',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e53;
$custom-light: #5f7383;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e53",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 83
  },
  "hsl": {
    "h": 203.333,
    "s": 48.214,
    "l": 21.961
  },
  "oklch": {
    "l": 0.34902,
    "c": 0.05339,
    "h": 238.8
  },
  "luminance": 0.04331
}

Semantic roles & 50–950 ramp

primary

#1D3E53

secondary

#885E44

accent

#8550D8

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#05080A

muted

#797B7C

Preview Lab

Preview with #1D3E53

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

Preview Lab → · Contrast checker → · Palette generator →