#1D1788#1D1788

#1D1788 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.175 H 272.4°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#1D1788
RGB	rgb(29, 23, 136)
HSL	hsl(243, 71%, 31%)
HSV	hsv(243, 83%, 53%)
CMYK	cmyk(78.7%, 83.1%, 0%, 46.7%)
CIE-LAB	lab(18.59, 41.40, -60.37)
CIE-LCH	lch(18.59, 73.20, 304.44°)
OKLab	oklab(31.64% 0.0074 -0.1747)
OKLCH	oklch(31.64% 0.175 272.4)
XYZ	xyz(5.2555, 2.6510, 23.5225)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1788 #828817

analogous

#174988 #1D1788 #551788

triadic

#1D1788 #881D17 #17881D

tetradic

#1D1788 #881749 #828817 #178855

square

#1D1788 #881749 #828817 #178855

split-complementary

#1D1788 #885517 #498817

monochromatic

#07051F #120E54 #1D1788 #2820BC #443BDE

Accessibility & contrast

On white

13.72

#1D1788 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1D1788 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1788

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1788	#FFFFFF	#000000	##FFFFFF
##1D1788	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002886

Tritanopia (blue-blind)

#003B50

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1d1788;
/* rgb */ color: rgb(29, 23, 136);
/* oklch */ color: oklch(31.6% 0.175 272.4);

Tailwind

colors: {
  custom: {
    50: '#6e57ac',
    500: '#1d1788',
    950: '#000000',
  },
}

SCSS

$custom: #1d1788;
$custom-light: #6e57ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1788",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 136
  },
  "hsl": {
    "h": 243.186,
    "s": 71.069,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31635,
    "c": 0.17485,
    "h": 272.4
  },
  "luminance": 0.02652
}

Semantic roles & 50–950 ramp

primary

#1D1788

secondary

#B5BC3F

accent

#EE3AE4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1D1788

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

Preview Lab → · Contrast checker → · Palette generator →