#1D1B84#1D1B84

#1D1B84 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.166 H 272.4°. Best body text is #FFFFFF at 13.62:1 contrast (WCAG AA passes).

Color values

HEX	#1D1B84
RGB	rgb(29, 27, 132)
HSL	hsl(241, 66%, 31%)
HSV	hsv(241, 80%, 52%)
CMYK	cmyk(78%, 79.5%, 0%, 48.2%)
CIE-LAB	lab(18.85, 37.93, -57.43)
CIE-LCH	lch(18.85, 68.82, 303.44°)
OKLab	oklab(31.67% 0.0069 -0.1662)
OKLCH	oklch(31.67% 0.166 272.4)
XYZ	xyz(5.0621, 2.7105, 22.0817)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1B84 #82841B

analogous

#1B4D84 #1D1B84 #511B84

triadic

#1D1B84 #841D1B #1B841D

tetradic

#1D1B84 #841B4D #82841B #1B8451

square

#1D1B84 #841B4D #82841B #1B8451

split-complementary

#1D1B84 #84511B #4D841B

monochromatic

#07061E #121151 #1D1B84 #2825B7 #4441D8

Accessibility & contrast

On white

13.62

#1D1B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1D1B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1B84

13.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1B84	#FFFFFF	#000000	##FFFFFF
##1D1B84	1.00	13.62	1.54	13.62
#FFFFFF	13.62	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003387

Deuteranopia (green-blind)

#002982

Tritanopia (blue-blind)

#003B4F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1d1b84;
/* rgb */ color: rgb(29, 27, 132);
/* oklch */ color: oklch(31.7% 0.166 272.4);

Tailwind

colors: {
  custom: {
    50: '#6c59a9',
    500: '#1d1b84',
    950: '#000000',
  },
}

SCSS

$custom: #1d1b84;
$custom-light: #6c59a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1b84",
  "rgb": {
    "r": 29,
    "g": 27,
    "b": 132
  },
  "hsl": {
    "h": 241.143,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31674,
    "c": 0.16635,
    "h": 272.4
  },
  "luminance": 0.02711
}

Semantic roles & 50–950 ramp

primary

#1D1B84

secondary

#B5B743

accent

#E93FE6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1D1B84

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

Preview Lab → · Contrast checker → · Palette generator →