#1D2173#1D2173

#1D2173 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.7% C 0.137 H 272.8°. Best body text is #FFFFFF at 13.84:1 contrast (WCAG AA passes).

Color values

HEX	#1D2173
RGB	rgb(29, 33, 115)
HSL	hsl(237, 60%, 28%)
HSV	hsv(237, 75%, 45%)
CMYK	cmyk(74.8%, 71.3%, 0%, 54.9%)
CIE-LAB	lab(18.30, 28.12, -47.48)
CIE-LCH	lch(18.30, 55.18, 300.63°)
OKLab	oklab(30.73% 0.0068 -0.1373)
OKLCH	oklch(30.73% 0.137 272.8)
XYZ	xyz(4.1440, 2.5863, 16.4971)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2173 #736F1D

analogous

#1D4C73 #1D2173 #441D73

triadic

#1D2173 #731D21 #21731D

tetradic

#1D2173 #731D4C #736F1D #1D7344

square

#1D2173 #731D4C #736F1D #1D7344

split-complementary

#1D2173 #73441D #4C731D

monochromatic

#060718 #111342 #1D2173 #292FA4 #3C43CE

Accessibility & contrast

On white

13.84

#1D2173 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1D2173 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2173

13.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2173	#FFFFFF	#000000	##FFFFFF
##1D2173	1.00	13.84	1.52	13.84
#FFFFFF	13.84	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003176

Deuteranopia (green-blind)

#002971

Tritanopia (blue-blind)

#003747

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1d2173;
/* rgb */ color: rgb(29, 33, 115);
/* oklch */ color: oklch(30.7% 0.137 272.8);

Tailwind

colors: {
  custom: {
    50: '#675c9c',
    500: '#1d2173',
    950: '#000000',
  },
}

SCSS

$custom: #1d2173;
$custom-light: #675c9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2173",
  "rgb": {
    "r": 29,
    "g": 33,
    "b": 115
  },
  "hsl": {
    "h": 237.209,
    "s": 59.722,
    "l": 28.235
  },
  "oklch": {
    "l": 0.30733,
    "c": 0.13743,
    "h": 272.8
  },
  "luminance": 0.02587
}

Semantic roles & 50–950 ramp

primary

#1D2173

secondary

#A7A345

accent

#DC45E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1D2173

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

Preview Lab → · Contrast checker → · Palette generator →