#1B166F#1B166F

#1B166F is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.4% C 0.145 H 274.5°. Best body text is #FFFFFF at 15.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B166F
RGB	rgb(27, 22, 111)
HSL	hsl(243, 67%, 26%)
HSV	hsv(243, 80%, 44%)
CMYK	cmyk(75.7%, 80.2%, 0%, 56.5%)
CIE-LAB	lab(15.24, 33.35, -49.93)
CIE-LCH	lch(15.24, 60.05, 303.74°)
OKLab	oklab(28.38% 0.0113 -0.1444)
OKLCH	oklch(28.38% 0.145 274.5)
XYZ	xyz(3.6072, 1.9542, 15.2229)
Luminance	0.0196 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B166F #6A6F16

analogous

#163D6F #1B166F #47166F

triadic

#1B166F #6F1B16 #166F1B

tetradic

#1B166F #6F163D #6A6F16 #166F47

square

#1B166F #6F163D #6A6F16 #166F47

split-complementary

#1B166F #6F4716 #3D6F16

monochromatic

#06051A #0F0C3C #1B166F #2720A2 #342BD5

Accessibility & contrast

On white

15.10

#1B166F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B166F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B166F

15.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B166F	#FFFFFF	#000000	##FFFFFF
##1B166F	1.00	15.10	1.39	15.10
#FFFFFF	15.10	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A72

Deuteranopia (green-blind)

#00226D

Tritanopia (blue-blind)

#003042

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b166f;
/* rgb */ color: rgb(27, 22, 111);
/* oklch */ color: oklch(28.4% 0.145 274.5);

Tailwind

colors: {
  custom: {
    50: '#675599',
    500: '#1b166f',
    950: '#000000',
  },
}

SCSS

$custom: #1b166f;
$custom-light: #675599;
$custom-dark: #000000;

JSON

{
  "hex": "#1b166f",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 111
  },
  "hsl": {
    "h": 243.371,
    "s": 66.917,
    "l": 26.078
  },
  "oklch": {
    "l": 0.28381,
    "c": 0.14486,
    "h": 274.5
  },
  "luminance": 0.01955
}

Semantic roles & 50–950 ramp

primary

#1B166F

secondary

#9FA53C

accent

#EA3EE0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B166F

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

Preview Lab → · Contrast checker → · Palette generator →