#1B1669#1B1669

#1B1669 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.7% C 0.137 H 275.3°. Best body text is #FFFFFF at 15.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B1669
RGB	rgb(27, 22, 105)
HSL	hsl(244, 65%, 25%)
HSV	hsv(244, 79%, 41%)
CMYK	cmyk(74.3%, 79%, 0%, 58.8%)
CIE-LAB	lab(14.55, 31.24, -47.16)
CIE-LCH	lch(14.55, 56.57, 303.52°)
OKLab	oklab(27.68% 0.0127 -0.1363)
OKLCH	oklch(27.68% 0.137 275.3)
XYZ	xyz(3.2879, 1.8264, 13.5411)
Luminance	0.0183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1669 #646916

analogous

#163B69 #1B1669 #441669

triadic

#1B1669 #691B16 #16691B

tetradic

#1B1669 #69163B #646916 #166944

square

#1B1669 #69163B #646916 #166944

split-complementary

#1B1669 #694416 #3B6916

monochromatic

#070519 #0E0B36 #1B1669 #28219C #352BCE

Accessibility & contrast

On white

15.38

#1B1669 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1B1669 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1669

15.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1669	#FFFFFF	#000000	##FFFFFF
##1B1669	1.00	15.38	1.37	15.38
#FFFFFF	15.38	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00286B

Deuteranopia (green-blind)

#002168

Tritanopia (blue-blind)

#002E3E

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b1669;
/* rgb */ color: rgb(27, 22, 105);
/* oklch */ color: oklch(27.7% 0.137 275.3);

Tailwind

colors: {
  custom: {
    50: '#655595',
    500: '#1b1669',
    950: '#000000',
  },
}

SCSS

$custom: #1b1669;
$custom-light: #655595;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1669",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 105
  },
  "hsl": {
    "h": 243.614,
    "s": 65.354,
    "l": 24.902
  },
  "oklch": {
    "l": 0.27684,
    "c": 0.13694,
    "h": 275.3
  },
  "luminance": 0.01827
}

Semantic roles & 50–950 ramp

primary

#1B1669

secondary

#999F3B

accent

#E83FDE

background

#F6F5F9

surface

#EBE8F2

border

#C6C4CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #1B1669

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

Preview Lab → · Contrast checker → · Palette generator →