#1B1885#1B1885

#1B1885 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.3% C 0.171 H 271.8°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#1B1885
RGB	rgb(27, 24, 133)
HSL	hsl(242, 69%, 31%)
HSV	hsv(242, 82%, 52%)
CMYK	cmyk(79.7%, 82%, 0%, 47.8%)
CIE-LAB	lab(18.27, 39.75, -59.01)
CIE-LCH	lch(18.27, 71.15, 303.97°)
OKLab	oklab(31.28% 0.0053 -0.1708)
OKLCH	oklch(31.28% 0.171 271.8)
XYZ	xyz(5.0108, 2.5792, 22.4195)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1885 #828518

analogous

#184B85 #1B1885 #511885

triadic

#1B1885 #851B18 #18851B

tetradic

#1B1885 #85184B #828518 #188551

square

#1B1885 #85184B #828518 #188551

split-complementary

#1B1885 #855118 #4B8518

monochromatic

#06051D #100F51 #1B1885 #2621B9 #403CDC

Accessibility & contrast

On white

13.85

#1B1885 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1B1885 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1885

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1885	#FFFFFF	#000000	##FFFFFF
##1B1885	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003288

Deuteranopia (green-blind)

#002783

Tritanopia (blue-blind)

#003A4F

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b1885;
/* rgb */ color: rgb(27, 24, 133);
/* oklch */ color: oklch(31.3% 0.171 271.8);

Tailwind

colors: {
  custom: {
    50: '#6c58aa',
    500: '#1b1885',
    950: '#000000',
  },
}

SCSS

$custom: #1b1885;
$custom-light: #6c58aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1885",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 133
  },
  "hsl": {
    "h": 241.651,
    "s": 69.427,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31275,
    "c": 0.17088,
    "h": 271.8
  },
  "luminance": 0.0258
}

Semantic roles & 50–950 ramp

primary

#1B1885

secondary

#B6B940

accent

#EC3CE7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1B1885

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

Preview Lab → · Contrast checker → · Palette generator →