#1B1B89#1B1B89

#1B1B89 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.1% C 0.173 H 271.1°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B1B89
RGB	rgb(27, 27, 137)
HSL	hsl(240, 67%, 32%)
HSV	hsv(240, 80%, 54%)
CMYK	cmyk(80.3%, 80.3%, 0%, 46.3%)
CIE-LAB	lab(19.32, 39.48, -59.79)
CIE-LCH	lch(19.32, 71.65, 303.44°)
OKLab	oklab(32.15% 0.0034 -0.1731)
OKLCH	oklch(32.15% 0.173 271.1)
XYZ	xyz(5.3578, 2.8224, 23.9245)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1B89 #89891B

analogous

#1B5289 #1B1B89 #521B89

triadic

#1B1B89 #891B1B #1B891B

tetradic

#1B1B89 #891B52 #89891B #1B8952

square

#1B1B89 #891B52 #89891B #1B8952

split-complementary

#1B1B89 #89521B #52891B

monochromatic

#070723 #111156 #1B1B89 #2525BC #4444DA

Accessibility & contrast

On white

13.42

#1B1B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B1B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1B89

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1B89	#FFFFFF	#000000	##FFFFFF
##1B1B89	1.00	13.42	1.56	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348C

Deuteranopia (green-blind)

#002987

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b1b89;
/* rgb */ color: rgb(27, 27, 137);
/* oklch */ color: oklch(32.1% 0.173 271.1);

Tailwind

colors: {
  custom: {
    50: '#6d5aad',
    500: '#1b1b89',
    950: '#000000',
  },
}

SCSS

$custom: #1b1b89;
$custom-light: #6d5aad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1b89",
  "rgb": {
    "r": 27,
    "g": 27,
    "b": 137
  },
  "hsl": {
    "h": 240,
    "s": 67.073,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32147,
    "c": 0.17315,
    "h": 271.1
  },
  "luminance": 0.02823
}

Semantic roles & 50–950 ramp

primary

#1B1B89

secondary

#BCBC44

accent

#EA3EEA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1B89

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

Preview Lab → · Contrast checker → · Palette generator →