#1B1989#1B1989

#1B1989 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.175 H 271.3°. Best body text is #FFFFFF at 13.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B1989
RGB	rgb(27, 25, 137)
HSL	hsl(241, 69%, 32%)
HSV	hsv(241, 82%, 54%)
CMYK	cmyk(80.3%, 81.8%, 0%, 46.3%)
CIE-LAB	lab(18.94, 40.56, -60.41)
CIE-LCH	lch(18.94, 72.77, 303.88°)
OKLab	oklab(31.89% 0.0041 -0.1749)
OKLCH	oklch(31.89% 0.175 271.3)
XYZ	xyz(5.3135, 2.7338, 23.9097)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1989 #878919

analogous

#194F89 #1B1989 #531989

triadic

#1B1989 #891B19 #19891B

tetradic

#1B1989 #89194F #878919 #198953

square

#1B1989 #89194F #878919 #198953

split-complementary

#1B1989 #895319 #4F8919

monochromatic

#070621 #111055 #1B1989 #2522BD #4340DC

Accessibility & contrast

On white

13.58

#1B1989 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B1989 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1989

13.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1989	#FFFFFF	#000000	##FFFFFF
##1B1989	1.00	13.58	1.55	13.58
#FFFFFF	13.58	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338C

Deuteranopia (green-blind)

#002887

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b1989;
/* rgb */ color: rgb(27, 25, 137);
/* oklch */ color: oklch(31.9% 0.175 271.3);

Tailwind

colors: {
  custom: {
    50: '#6d58ad',
    500: '#1b1989',
    950: '#000000',
  },
}

SCSS

$custom: #1b1989;
$custom-light: #6d58ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1989",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 137
  },
  "hsl": {
    "h": 241.071,
    "s": 69.136,
    "l": 31.765
  },
  "oklch": {
    "l": 0.31886,
    "c": 0.17493,
    "h": 271.3
  },
  "luminance": 0.02734
}

Semantic roles & 50–950 ramp

primary

#1B1989

secondary

#BABC41

accent

#EC3CE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1B1989

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

Preview Lab → · Contrast checker → · Palette generator →