#1D3255#1D3255

#1D3255 is a dark, moderate blue. Relative luminance 0.032; OKLCH L 31.9% C 0.068 H 260.1°. Best body text is #FFFFFF at 12.81:1 contrast (WCAG AA passes).

Color values

HEX	#1D3255
RGB	rgb(29, 50, 85)
HSL	hsl(218, 49%, 22%)
HSV	hsv(218, 66%, 33%)
CMYK	cmyk(65.9%, 41.2%, 0%, 66.7%)
CIE-LAB	lab(20.82, 4.18, -23.76)
CIE-LCH	lch(20.82, 24.12, 279.99°)
OKLab	oklab(31.86% -0.0118 -0.0674)
OKLCH	oklch(31.86% 0.068 260.1)
XYZ	xyz(3.2864, 3.1980, 9.0367)
Luminance	0.0320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3255 #55401D

analogous

#1D4E55 #1D3255 #241D55

triadic

#1D3255 #551D32 #32551D

tetradic

#1D3255 #551D4E #55401D #1D5524

square

#1D3255 #551D4E #55401D #1D5524

split-complementary

#1D3255 #55241D #4E551D

monochromatic

#080D17 #0D1727 #1D3255 #2D4D83 #3C68B0

Accessibility & contrast

On white

12.81

#1D3255 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1D3255 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3255

12.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3255	#FFFFFF	#000000	##FFFFFF
##1D3255	1.00	12.81	1.64	12.81
#FFFFFF	12.81	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#233556

Deuteranopia (green-blind)

#1B3054

Tritanopia (blue-blind)

#003A3F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d3255;
/* rgb */ color: rgb(29, 50, 85);
/* oklch */ color: oklch(31.9% 0.068 260.1);

Tailwind

colors: {
  custom: {
    50: '#5f6985',
    500: '#1d3255',
    950: '#000000',
  },
}

SCSS

$custom: #1d3255;
$custom-light: #5f6985;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3255",
  "rgb": {
    "r": 29,
    "g": 50,
    "b": 85
  },
  "hsl": {
    "h": 217.5,
    "s": 49.123,
    "l": 22.353
  },
  "oklch": {
    "l": 0.31864,
    "c": 0.06843,
    "h": 260.1
  },
  "luminance": 0.03198
}

Semantic roles & 50–950 ramp

primary

#1D3255

secondary

#8A7044

accent

#A54FD9

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #1D3255

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

Preview Lab → · Contrast checker → · Palette generator →