#16183B#16183B

#16183B is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.9% C 0.066 H 277.4°. Best body text is #FFFFFF at 17.10:1 contrast (WCAG AA passes).

Color values

HEX	#16183B
RGB	rgb(22, 24, 59)
HSL	hsl(237, 46%, 16%)
HSV	hsv(237, 63%, 23%)
CMYK	cmyk(62.7%, 59.3%, 0%, 76.9%)
CIE-LAB	lab(10.10, 11.40, -23.00)
CIE-LCH	lch(10.10, 25.67, 296.36°)
OKLab	oklab(22.95% 0.0085 -0.0657)
OKLCH	oklch(22.95% 0.066 277.4)
XYZ	xyz(1.4467, 1.1395, 4.2805)
Luminance	0.0114 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#16183B #3B3916

analogous

#162A3B #16183B #26163B

triadic

#16183B #3B1618 #183B16

tetradic

#16183B #3B162A #3B3916 #163B26

square

#16183B #3B162A #3B3916 #163B26

split-complementary

#16183B #3B2616 #2A3B16

monochromatic

#080916 #080916 #16183B #272A68 #373C94

Accessibility & contrast

On white

17.10

#16183B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#16183B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #16183B

17.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##16183B	#FFFFFF	#000000	##FFFFFF
##16183B	1.00	17.10	1.23	17.10
#FFFFFF	17.10	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#061D3C

Deuteranopia (green-blind)

#031A3A

Tritanopia (blue-blind)

#052026

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #16183b;
/* rgb */ color: rgb(22, 24, 59);
/* oklch */ color: oklch(22.9% 0.066 277.4);

Tailwind

colors: {
  custom: {
    50: '#575471',
    500: '#16183b',
    950: '#000000',
  },
}

SCSS

$custom: #16183b;
$custom-light: #575471;
$custom-dark: #000000;

JSON

{
  "hex": "#16183b",
  "rgb": {
    "r": 22,
    "g": 24,
    "b": 59
  },
  "hsl": {
    "h": 236.757,
    "s": 45.679,
    "l": 15.882
  },
  "oklch": {
    "l": 0.22949,
    "c": 0.06625,
    "h": 277.4
  },
  "luminance": 0.0114
}

Semantic roles & 50–950 ramp

primary

#16183B

secondary

#726F3B

accent

#CE52D5

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030207

muted

#78787A

Preview Lab

Preview with #16183B

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

Preview Lab → · Contrast checker → · Palette generator →