#1D1B9E#1D1B9E

#1D1B9E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.8% C 0.198 H 270.3°. Best body text is #FFFFFF at 12.33:1 contrast (WCAG AA passes).

Color values

HEX	#1D1B9E
RGB	rgb(29, 27, 158)
HSL	hsl(241, 71%, 36%)
HSV	hsv(241, 83%, 62%)
CMYK	cmyk(81.6%, 82.9%, 0%, 38%)
CIE-LAB	lab(21.99, 46.51, -68.36)
CIE-LCH	lch(21.99, 82.68, 304.23°)
OKLab	oklab(34.78% 0.0012 -0.1979)
OKLCH	oklch(34.78% 0.198 270.3)
XYZ	xyz(7.0681, 3.5129, 32.6467)
Luminance	0.0351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1B9E #9C9E1B

analogous

#1B5B9E #1D1B9E #5F1B9E

triadic

#1D1B9E #9E1D1B #1B9E1D

tetradic

#1D1B9E #9E1B5B #9C9E1B #1B9E5F

square

#1D1B9E #9E1B5B #9C9E1B #1B9E5F

split-complementary

#1D1B9E #9E5F1B #5B9E1B

monochromatic

#0A0935 #13126A #1D1B9E #2724D2 #5452E1

Accessibility & contrast

On white

12.33

#1D1B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1D1B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1B9E

12.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1B9E	#FFFFFF	#000000	##FFFFFF
##1D1B9E	1.00	12.33	1.70	12.33
#FFFFFF	12.33	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA2

Deuteranopia (green-blind)

#002E9C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1d1b9e;
/* rgb */ color: rgb(29, 27, 158);
/* oklch */ color: oklch(34.8% 0.198 270.3);

Tailwind

colors: {
  custom: {
    50: '#735bbc',
    500: '#1d1b9e',
    950: '#000000',
  },
}

SCSS

$custom: #1d1b9e;
$custom-light: #735bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1b9e",
  "rgb": {
    "r": 29,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 240.916,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.34782,
    "c": 0.19789,
    "h": 270.3
  },
  "luminance": 0.03514
}

Semantic roles & 50–950 ramp

primary

#1D1B9E

secondary

#C2C451

accent

#EE3AEB

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1D1B9E

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

Preview Lab → · Contrast checker → · Palette generator →