#1B189E#1B189E

#1B189E is a dark, highly saturated blue. Relative luminance 0.034; OKLCH L 34.4% C 0.201 H 269.9°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#1B189E
RGB	rgb(27, 24, 158)
HSL	hsl(241, 74%, 36%)
HSV	hsv(241, 85%, 62%)
CMYK	cmyk(82.9%, 84.8%, 0%, 38%)
CIE-LAB	lab(21.41, 47.82, -69.33)
CIE-LCH	lch(21.41, 84.22, 304.59°)
OKLab	oklab(34.35% -0.0005 -0.2007)
OKLCH	oklch(34.35% 0.201 269.9)
XYZ	xyz(6.9481, 3.3541, 32.6223)
Luminance	0.0336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B189E #9B9E18

analogous

#18589E #1B189E #5E189E

triadic

#1B189E #9E1B18 #189E1B

tetradic

#1B189E #9E1858 #9B9E18 #189E5E

square

#1B189E #9E1858 #9B9E18 #189E5E

split-complementary

#1B189E #9E5E18 #589E18

monochromatic

#090834 #121069 #1B189E #2420D3 #504DE4

Accessibility & contrast

On white

12.57

#1B189E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1B189E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B189E

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B189E	#FFFFFF	#000000	##FFFFFF
##1B189E	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA2

Deuteranopia (green-blind)

#002C9C

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b189e;
/* rgb */ color: rgb(27, 24, 158);
/* oklch */ color: oklch(34.4% 0.201 269.9);

Tailwind

colors: {
  custom: {
    50: '#735abc',
    500: '#1b189e',
    950: '#000000',
  },
}

SCSS

$custom: #1b189e;
$custom-light: #735abc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b189e",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 158
  },
  "hsl": {
    "h": 241.343,
    "s": 73.626,
    "l": 35.686
  },
  "oklch": {
    "l": 0.34351,
    "c": 0.20066,
    "h": 269.9
  },
  "luminance": 0.03355
}

Semantic roles & 50–950 ramp

primary

#1B189E

secondary

#C3C64C

accent

#F038EC

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B189E

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

Preview Lab → · Contrast checker → · Palette generator →