#1D188A#1D188A

#1D188A is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.176 H 272.1°. Best body text is #FFFFFF at 13.55:1 contrast (WCAG AA passes).

Color values

HEX	#1D188A
RGB	rgb(29, 24, 138)
HSL	hsl(243, 70%, 32%)
HSV	hsv(243, 83%, 54%)
CMYK	cmyk(79%, 82.6%, 0%, 45.9%)
CIE-LAB	lab(19.01, 41.54, -60.93)
CIE-LCH	lch(19.01, 73.74, 304.29°)
OKLab	oklab(32% 0.0066 -0.1763)
OKLCH	oklch(32% 0.176 272.1)
XYZ	xyz(5.4192, 2.7489, 24.2848)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D188A #858A18

analogous

#184C8A #1D188A #56188A

triadic

#1D188A #8A1D18 #188A1D

tetradic

#1D188A #8A184C #858A18 #188A56

square

#1D188A #8A184C #858A18 #188A56

split-complementary

#1D188A #8A5618 #4C8A18

monochromatic

#070622 #120F56 #1D188A #2821BE #463FDE

Accessibility & contrast

On white

13.55

#1D188A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1D188A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D188A

13.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D188A	#FFFFFF	#000000	##FFFFFF
##1D188A	1.00	13.55	1.55	13.55
#FFFFFF	13.55	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348D

Deuteranopia (green-blind)

#002888

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1d188a;
/* rgb */ color: rgb(29, 24, 138);
/* oklch */ color: oklch(32.0% 0.176 272.1);

Tailwind

colors: {
  custom: {
    50: '#6e58ad',
    500: '#1d188a',
    950: '#000000',
  },
}

SCSS

$custom: #1d188a;
$custom-light: #6e58ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d188a",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 138
  },
  "hsl": {
    "h": 242.632,
    "s": 70.37,
    "l": 31.765
  },
  "oklch": {
    "l": 0.31998,
    "c": 0.17644,
    "h": 272.1
  },
  "luminance": 0.02749
}

Semantic roles & 50–950 ramp

primary

#1D188A

secondary

#B8BD40

accent

#ED3BE5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1D188A

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

Preview Lab → · Contrast checker → · Palette generator →