#1D3154#1D3154

#1D3154 is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.5% C 0.068 H 260.9°. Best body text is #FFFFFF at 12.97:1 contrast (WCAG AA passes).

Color values

HEX	#1D3154
RGB	rgb(29, 49, 84)
HSL	hsl(218, 49%, 22%)
HSV	hsv(218, 65%, 33%)
CMYK	cmyk(65.5%, 41.7%, 0%, 67.1%)
CIE-LAB	lab(20.43, 4.50, -23.71)
CIE-LCH	lch(20.43, 24.13, 280.75°)
OKLab	oklab(31.54% -0.0108 -0.0673)
OKLCH	oklch(31.54% 0.068 260.9)
XYZ	xyz(3.2047, 3.0977, 8.8148)
Luminance	0.0310 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3154 #54401D

analogous

#1D4D54 #1D3154 #251D54

triadic

#1D3154 #541D31 #31541D

tetradic

#1D3154 #541D4D #54401D #1D5425

square

#1D3154 #541D4D #54401D #1D5425

split-complementary

#1D3154 #54251D #4D541D

monochromatic

#080D17 #0D1627 #1D3154 #2D4C81 #3C66AF

Accessibility & contrast

On white

12.97

#1D3154 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1D3154 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3154

12.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3154	#FFFFFF	#000000	##FFFFFF
##1D3154	1.00	12.97	1.62	12.97
#FFFFFF	12.97	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#223455

Deuteranopia (green-blind)

#1B2F53

Tritanopia (blue-blind)

#00393E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1d3154;
/* rgb */ color: rgb(29, 49, 84);
/* oklch */ color: oklch(31.5% 0.068 260.9);

Tailwind

colors: {
  custom: {
    50: '#5f6884',
    500: '#1d3154',
    950: '#000000',
  },
}

SCSS

$custom: #1d3154;
$custom-light: #5f6884;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3154",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 84
  },
  "hsl": {
    "h": 218.182,
    "s": 48.673,
    "l": 22.157
  },
  "oklch": {
    "l": 0.31542,
    "c": 0.06814,
    "h": 260.9
  },
  "luminance": 0.03098
}

Semantic roles & 50–950 ramp

primary

#1D3154

secondary

#897044

accent

#A750D8

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #1D3154

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

Preview Lab → · Contrast checker → · Palette generator →