#1B166B#1B166B

#1B166B is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.9% C 0.140 H 275.0°. Best body text is #FFFFFF at 15.29:1 contrast (WCAG AA passes).

Color values

HEX	#1B166B
RGB	rgb(27, 22, 107)
HSL	hsl(244, 66%, 25%)
HSV	hsv(244, 79%, 42%)
CMYK	cmyk(74.8%, 79.4%, 0%, 58%)
CIE-LAB	lab(14.78, 31.95, -48.09)
CIE-LCH	lch(14.78, 57.74, 303.60°)
OKLab	oklab(27.92% 0.0123 -0.1391)
OKLCH	oklch(27.92% 0.14 275)
XYZ	xyz(3.3919, 1.8680, 14.0889)
Luminance	0.0187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B166B #666B16

analogous

#163C6B #1B166B #45166B

triadic

#1B166B #6B1B16 #166B1B

tetradic

#1B166B #6B163C #666B16 #166B45

square

#1B166B #6B163C #666B16 #166B45

split-complementary

#1B166B #6B4516 #3C6B16

monochromatic

#060519 #0E0C38 #1B166B #28209E #352BD1

Accessibility & contrast

On white

15.29

#1B166B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1B166B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B166B

15.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B166B	#FFFFFF	#000000	##FFFFFF
##1B166B	1.00	15.29	1.37	15.29
#FFFFFF	15.29	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00296D

Deuteranopia (green-blind)

#002169

Tritanopia (blue-blind)

#002F3F

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b166b;
/* rgb */ color: rgb(27, 22, 107);
/* oklch */ color: oklch(27.9% 0.140 275.0);

Tailwind

colors: {
  custom: {
    50: '#665596',
    500: '#1b166b',
    950: '#000000',
  },
}

SCSS

$custom: #1b166b;
$custom-light: #665596;
$custom-dark: #000000;

JSON

{
  "hex": "#1b166b",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 107
  },
  "hsl": {
    "h": 243.529,
    "s": 65.891,
    "l": 25.294
  },
  "oklch": {
    "l": 0.27915,
    "c": 0.1396,
    "h": 275
  },
  "luminance": 0.01868
}

Semantic roles & 50–950 ramp

primary

#1B166B

secondary

#9BA13B

accent

#E93FDF

background

#F6F5F9

surface

#EBE8F2

border

#C6C4CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1B166B

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

Preview Lab → · Contrast checker → · Palette generator →