#1D1381#1D1381

#1D1381 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.3% C 0.170 H 273.6°. Best body text is #FFFFFF at 14.36:1 contrast (WCAG AA passes).

Color values

HEX	#1D1381
RGB	rgb(29, 19, 129)
HSL	hsl(245, 74%, 29%)
HSV	hsv(245, 85%, 51%)
CMYK	cmyk(77.5%, 85.3%, 0%, 49.4%)
CIE-LAB	lab(17.04, 41.10, -58.51)
CIE-LCH	lch(17.04, 71.51, 305.09°)
OKLab	oklab(30.31% 0.0105 -0.1692)
OKLCH	oklch(30.31% 0.17 273.6)
XYZ	xyz(4.7007, 2.3114, 20.9630)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1381 #778113

analogous

#134081 #1D1381 #541381

triadic

#1D1381 #811D13 #13811D

tetradic

#1D1381 #811340 #778113 #138154

square

#1D1381 #811340 #778113 #138154

split-complementary

#1D1381 #815413 #408113

monochromatic

#06041B #110B4C #1D1381 #291BB6 #3E2EE0

Accessibility & contrast

On white

14.36

#1D1381 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1D1381 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1381

14.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1381	#FFFFFF	#000000	##FFFFFF
##1D1381	1.00	14.36	1.46	14.36
#FFFFFF	14.36	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F84

Deuteranopia (green-blind)

#00257F

Tritanopia (blue-blind)

#00364B

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1d1381;
/* rgb */ color: rgb(29, 19, 129);
/* oklch */ color: oklch(30.3% 0.170 273.6);

Tailwind

colors: {
  custom: {
    50: '#6c55a7',
    500: '#1d1381',
    950: '#000000',
  },
}

SCSS

$custom: #1d1381;
$custom-light: #6c55a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1381",
  "rgb": {
    "r": 29,
    "g": 19,
    "b": 129
  },
  "hsl": {
    "h": 245.455,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30313,
    "c": 0.16956,
    "h": 273.6
  },
  "luminance": 0.02312
}

Semantic roles & 50–950 ramp

primary

#1D1381

secondary

#ABB63A

accent

#F137E0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1D1381

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

Preview Lab → · Contrast checker → · Palette generator →