#1D1771#1D1771

#1D1771 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.9% C 0.146 H 275.2°. Best body text is #FFFFFF at 14.86:1 contrast (WCAG AA passes).

Color values

HEX	#1D1771
RGB	rgb(29, 23, 113)
HSL	hsl(244, 66%, 27%)
HSV	hsv(244, 80%, 44%)
CMYK	cmyk(74.3%, 79.6%, 0%, 55.7%)
CIE-LAB	lab(15.83, 33.66, -50.26)
CIE-LCH	lch(15.83, 60.49, 303.81°)
OKLab	oklab(28.9% 0.0131 -0.1453)
OKLCH	oklch(28.9% 0.146 275.2)
XYZ	xyz(3.7927, 2.0659, 15.8185)
Luminance	0.0207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1771 #6B7117

analogous

#173E71 #1D1771 #4A1771

triadic

#1D1771 #711D17 #17711D

tetradic

#1D1771 #71173E #6B7117 #17714A

square

#1D1771 #71173E #6B7117 #17714A

split-complementary

#1D1771 #714A17 #3E7117

monochromatic

#070519 #100D3E #1D1771 #2A21A4 #392ED4

Accessibility & contrast

On white

14.86

#1D1771 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1D1771 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1771

14.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1771	#FFFFFF	#000000	##FFFFFF
##1D1771	1.00	14.86	1.41	14.86
#FFFFFF	14.86	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B74

Deuteranopia (green-blind)

#00236F

Tritanopia (blue-blind)

#003243

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1d1771;
/* rgb */ color: rgb(29, 23, 113);
/* oklch */ color: oklch(28.9% 0.146 275.2);

Tailwind

colors: {
  custom: {
    50: '#68569b',
    500: '#1d1771',
    950: '#000000',
  },
}

SCSS

$custom: #1d1771;
$custom-light: #68569b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1771",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 113
  },
  "hsl": {
    "h": 244,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.289,
    "c": 0.14593,
    "h": 275.2
  },
  "luminance": 0.02066
}

Semantic roles & 50–950 ramp

primary

#1D1771

secondary

#A0A73D

accent

#E93FDE

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1D1771

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

Preview Lab → · Contrast checker → · Palette generator →