#1D2172#1D2172

#1D2172 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.6% C 0.136 H 272.9°. Best body text is #FFFFFF at 13.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D2172
RGB	rgb(29, 33, 114)
HSL	hsl(237, 59%, 28%)
HSV	hsv(237, 75%, 45%)
CMYK	cmyk(74.6%, 71.1%, 0%, 55.3%)
CIE-LAB	lab(18.20, 27.74, -47.00)
CIE-LCH	lch(18.20, 54.57, 300.55°)
OKLab	oklab(30.63% 0.0069 -0.1359)
OKLCH	oklch(30.63% 0.136 272.9)
XYZ	xyz(4.0868, 2.5634, 16.1957)
Luminance	0.0256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2172 #726E1D

analogous

#1D4C72 #1D2172 #431D72

triadic

#1D2172 #721D21 #21721D

tetradic

#1D2172 #721D4C #726E1D #1D7243

square

#1D2172 #721D4C #726E1D #1D7243

split-complementary

#1D2172 #72431D #4C721D

monochromatic

#060718 #111341 #1D2172 #292FA3 #3C43CD

Accessibility & contrast

On white

13.88

#1D2172 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1D2172 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2172

13.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2172	#FFFFFF	#000000	##FFFFFF
##1D2172	1.00	13.88	1.51	13.88
#FFFFFF	13.88	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003074

Deuteranopia (green-blind)

#002870

Tritanopia (blue-blind)

#003746

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1d2172;
/* rgb */ color: rgb(29, 33, 114);
/* oklch */ color: oklch(30.6% 0.136 272.9);

Tailwind

colors: {
  custom: {
    50: '#675c9b',
    500: '#1d2172',
    950: '#000000',
  },
}

SCSS

$custom: #1d2172;
$custom-light: #675c9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2172",
  "rgb": {
    "r": 29,
    "g": 33,
    "b": 114
  },
  "hsl": {
    "h": 237.176,
    "s": 59.441,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30628,
    "c": 0.13603,
    "h": 272.9
  },
  "luminance": 0.02564
}

Semantic roles & 50–950 ramp

primary

#1D2172

secondary

#A6A245

accent

#DB45E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1D2172

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

Preview Lab → · Contrast checker → · Palette generator →