#1D1789#1D1789

#1D1789 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.176 H 272.3°. Best body text is #FFFFFF at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D1789
RGB	rgb(29, 23, 137)
HSL	hsl(243, 71%, 31%)
HSV	hsv(243, 83%, 54%)
CMYK	cmyk(78.8%, 83.2%, 0%, 46.3%)
CIE-LAB	lab(18.71, 41.72, -60.79)
CIE-LCH	lch(18.71, 73.73, 304.46°)
OKLab	oklab(31.76% 0.0071 -0.1759)
OKLCH	oklch(31.76% 0.176 272.3)
XYZ	xyz(5.3269, 2.6796, 23.8985)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1789 #838917

analogous

#174A89 #1D1789 #561789

triadic

#1D1789 #891D17 #17891D

tetradic

#1D1789 #89174A #838917 #178956

square

#1D1789 #89174A #838917 #178956

split-complementary

#1D1789 #895617 #4A8917

monochromatic

#070520 #120E55 #1D1789 #2820BD #453CDE

Accessibility & contrast

On white

13.67

#1D1789 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1D1789 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1789

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1789	#FFFFFF	#000000	##FFFFFF
##1D1789	1.00	13.67	1.54	13.67
#FFFFFF	13.67	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338C

Deuteranopia (green-blind)

#002887

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1d1789;
/* rgb */ color: rgb(29, 23, 137);
/* oklch */ color: oklch(31.8% 0.176 272.3);

Tailwind

colors: {
  custom: {
    50: '#6e57ad',
    500: '#1d1789',
    950: '#000000',
  },
}

SCSS

$custom: #1d1789;
$custom-light: #6e57ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1789",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 137
  },
  "hsl": {
    "h": 243.158,
    "s": 71.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31757,
    "c": 0.17605,
    "h": 272.3
  },
  "luminance": 0.0268
}

Semantic roles & 50–950 ramp

primary

#1D1789

secondary

#B6BD3F

accent

#EE3AE5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1D1789

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

Preview Lab → · Contrast checker → · Palette generator →