#1D187D#1D187D

#1D187D is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.4% C 0.160 H 273.5°. Best body text is #FFFFFF at 14.20:1 contrast (WCAG AA passes).

Color values

HEX	#1D187D
RGB	rgb(29, 24, 125)
HSL	hsl(243, 68%, 29%)
HSV	hsv(243, 81%, 49%)
CMYK	cmyk(76.8%, 80.8%, 0%, 51%)
CIE-LAB	lab(17.44, 37.21, -55.32)
CIE-LCH	lch(17.44, 66.67, 303.93°)
OKLab	oklab(30.44% 0.0098 -0.16)
OKLCH	oklch(30.44% 0.16 273.5)
XYZ	xyz(4.5338, 2.3947, 19.6213)
Luminance	0.0239 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D187D #787D18

analogous

#18467D #1D187D #50187D

triadic

#1D187D #7D1D18 #187D1D

tetradic

#1D187D #7D1846 #787D18 #187D50

square

#1D187D #7D1846 #787D18 #187D50

split-complementary

#1D187D #7D5018 #467D18

monochromatic

#06051A #110E4A #1D187D #2922B0 #3F37D9

Accessibility & contrast

On white

14.20

#1D187D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1D187D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D187D

14.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D187D	#FFFFFF	#000000	##FFFFFF
##1D187D	1.00	14.20	1.48	14.20
#FFFFFF	14.20	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F80

Deuteranopia (green-blind)

#00267B

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1d187d;
/* rgb */ color: rgb(29, 24, 125);
/* oklch */ color: oklch(30.4% 0.160 273.5);

Tailwind

colors: {
  custom: {
    50: '#6b57a4',
    500: '#1d187d',
    950: '#000000',
  },
}

SCSS

$custom: #1d187d;
$custom-light: #6b57a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d187d",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 125
  },
  "hsl": {
    "h": 242.97,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30443,
    "c": 0.16035,
    "h": 273.5
  },
  "luminance": 0.02395
}

Semantic roles & 50–950 ramp

primary

#1D187D

secondary

#ACB23F

accent

#EB3DE2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1D187D

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

Preview Lab → · Contrast checker → · Palette generator →