#1B1880#1B1880

#1B1880 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.7% C 0.165 H 272.2°. Best body text is #FFFFFF at 14.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B1880
RGB	rgb(27, 24, 128)
HSL	hsl(242, 68%, 30%)
HSV	hsv(242, 81%, 50%)
CMYK	cmyk(78.9%, 81.3%, 0%, 49.8%)
CIE-LAB	lab(17.66, 38.07, -56.85)
CIE-LCH	lch(17.66, 68.42, 303.81°)
OKLab	oklab(30.67% 0.0065 -0.1645)
OKLCH	oklch(30.67% 0.165 272.2)
XYZ	xyz(4.6736, 2.4443, 20.6434)
Luminance	0.0244 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1880 #7D8018

analogous

#184980 #1B1880 #4F1880

triadic

#1B1880 #801B18 #18801B

tetradic

#1B1880 #801849 #7D8018 #18804F

square

#1B1880 #801849 #7D8018 #18804F

split-complementary

#1B1880 #804F18 #498018

monochromatic

#05051A #100E4C #1B1880 #2622B4 #3D39DA

Accessibility & contrast

On white

14.10

#1B1880 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1B1880 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1880

14.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1880	#FFFFFF	#000000	##FFFFFF
##1B1880	1.00	14.10	1.49	14.10
#FFFFFF	14.10	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003083

Deuteranopia (green-blind)

#00267E

Tritanopia (blue-blind)

#00384C

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1b1880;
/* rgb */ color: rgb(27, 24, 128);
/* oklch */ color: oklch(30.7% 0.165 272.2);

Tailwind

colors: {
  custom: {
    50: '#6b57a6',
    500: '#1b1880',
    950: '#000000',
  },
}

SCSS

$custom: #1b1880;
$custom-light: #6b57a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1880",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 128
  },
  "hsl": {
    "h": 241.731,
    "s": 68.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.30674,
    "c": 0.16468,
    "h": 272.2
  },
  "luminance": 0.02445
}

Semantic roles & 50–950 ramp

primary

#1B1880

secondary

#B1B440

accent

#EB3DE6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B1880

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

Preview Lab → · Contrast checker → · Palette generator →