#1B166E#1B166E

#1B166E is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.3% C 0.144 H 274.6°. Best body text is #FFFFFF at 15.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B166E
RGB	rgb(27, 22, 110)
HSL	hsl(243, 67%, 26%)
HSV	hsv(243, 80%, 43%)
CMYK	cmyk(75.5%, 80%, 0%, 56.9%)
CIE-LAB	lab(15.13, 33.00, -49.47)
CIE-LCH	lch(15.13, 59.47, 303.70°)
OKLab	oklab(28.26% 0.0115 -0.1431)
OKLCH	oklch(28.26% 0.144 274.6)
XYZ	xyz(3.5524, 1.9323, 14.9346)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B166E #696E16

analogous

#163D6E #1B166E #47166E

triadic

#1B166E #6E1B16 #166E1B

tetradic

#1B166E #6E163D #696E16 #166E47

square

#1B166E #6E163D #696E16 #166E47

split-complementary

#1B166E #6E4716 #3D6E16

monochromatic

#06051A #0E0C3B #1B166E #2820A1 #342AD4

Accessibility & contrast

On white

15.14

#1B166E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B166E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B166E

15.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B166E	#FFFFFF	#000000	##FFFFFF
##1B166E	1.00	15.14	1.39	15.14
#FFFFFF	15.14	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A71

Deuteranopia (green-blind)

#00226C

Tritanopia (blue-blind)

#003041

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b166e;
/* rgb */ color: rgb(27, 22, 110);
/* oklch */ color: oklch(28.3% 0.144 274.6);

Tailwind

colors: {
  custom: {
    50: '#665599',
    500: '#1b166e',
    950: '#000000',
  },
}

SCSS

$custom: #1b166e;
$custom-light: #665599;
$custom-dark: #000000;

JSON

{
  "hex": "#1b166e",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 110
  },
  "hsl": {
    "h": 243.409,
    "s": 66.667,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28264,
    "c": 0.14355,
    "h": 274.6
  },
  "luminance": 0.01933
}

Semantic roles & 50–950 ramp

primary

#1B166E

secondary

#9EA43C

accent

#EA3EE0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B166E

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

Preview Lab → · Contrast checker → · Palette generator →