#1B1869#1B1869

#1B1869 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.0% C 0.135 H 274.9°. Best body text is #FFFFFF at 15.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B1869
RGB	rgb(27, 24, 105)
HSL	hsl(242, 63%, 25%)
HSV	hsv(242, 77%, 41%)
CMYK	cmyk(74.3%, 77.1%, 0%, 58.8%)
CIE-LAB	lab(14.99, 30.01, -46.44)
CIE-LCH	lch(14.99, 55.29, 302.87°)
OKLab	oklab(27.99% 0.0115 -0.1343)
OKLCH	oklch(27.99% 0.135 274.9)
XYZ	xyz(3.3276, 1.9059, 13.5544)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1869 #666918

analogous

#183D69 #1B1869 #431869

triadic

#1B1869 #691B18 #18691B

tetradic

#1B1869 #69183D #666918 #186943

square

#1B1869 #69183D #666918 #186943

split-complementary

#1B1869 #694318 #3D6918

monochromatic

#060619 #0E0D37 #1B1869 #28239B #352FCD

Accessibility & contrast

On white

15.20

#1B1869 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1B1869 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1869

15.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1869	#FFFFFF	#000000	##FFFFFF
##1B1869	1.00	15.20	1.38	15.20
#FFFFFF	15.20	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00296B

Deuteranopia (green-blind)

#002268

Tritanopia (blue-blind)

#002F3F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b1869;
/* rgb */ color: rgb(27, 24, 105);
/* oklch */ color: oklch(28.0% 0.135 274.9);

Tailwind

colors: {
  custom: {
    50: '#655695',
    500: '#1b1869',
    950: '#000000',
  },
}

SCSS

$custom: #1b1869;
$custom-light: #655695;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1869",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 105
  },
  "hsl": {
    "h": 242.222,
    "s": 62.791,
    "l": 25.294
  },
  "oklch": {
    "l": 0.27993,
    "c": 0.13476,
    "h": 274.9
  },
  "luminance": 0.01906
}

Semantic roles & 50–950 ramp

primary

#1B1869

secondary

#9B9F3E

accent

#E642E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #1B1869

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

Preview Lab → · Contrast checker → · Palette generator →