#1D1871#1D1871

#1D1871 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.0% C 0.145 H 275.0°. Best body text is #FFFFFF at 14.77:1 contrast (WCAG AA passes).

Color values

HEX	#1D1871
RGB	rgb(29, 24, 113)
HSL	hsl(243, 65%, 27%)
HSV	hsv(243, 79%, 44%)
CMYK	cmyk(74.3%, 78.8%, 0%, 55.7%)
CIE-LAB	lab(16.04, 33.08, -49.92)
CIE-LCH	lch(16.04, 59.88, 303.53°)
OKLab	oklab(29.05% 0.0126 -0.1443)
OKLCH	oklch(29.05% 0.145 275)
XYZ	xyz(3.8130, 2.1064, 15.8252)
Luminance	0.0211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1871 #6C7118

analogous

#184071 #1D1871 #4A1871

triadic

#1D1871 #711D18 #18711D

tetradic

#1D1871 #711840 #6C7118 #18714A

square

#1D1871 #711840 #6C7118 #18714A

split-complementary

#1D1871 #714A18 #407118

monochromatic

#060519 #100D3F #1D1871 #2A23A3 #3930D3

Accessibility & contrast

On white

14.77

#1D1871 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1D1871 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1871

14.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1871	#FFFFFF	#000000	##FFFFFF
##1D1871	1.00	14.77	1.42	14.77
#FFFFFF	14.77	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C74

Deuteranopia (green-blind)

#00246F

Tritanopia (blue-blind)

#003243

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1d1871;
/* rgb */ color: rgb(29, 24, 113);
/* oklch */ color: oklch(29.0% 0.145 275.0);

Tailwind

colors: {
  custom: {
    50: '#68569b',
    500: '#1d1871',
    950: '#000000',
  },
}

SCSS

$custom: #1d1871;
$custom-light: #68569b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1871",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 113
  },
  "hsl": {
    "h": 243.371,
    "s": 64.964,
    "l": 26.863
  },
  "oklch": {
    "l": 0.29045,
    "c": 0.1449,
    "h": 275
  },
  "luminance": 0.02107
}

Semantic roles & 50–950 ramp

primary

#1D1871

secondary

#A1A63E

accent

#E840DE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1D1871

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

Preview Lab → · Contrast checker → · Palette generator →