#183979#183979

#183979 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 36.0% C 0.116 H 261.9°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#183979
RGB	rgb(24, 57, 121)
HSL	hsl(220, 67%, 28%)
HSV	hsv(220, 80%, 47%)
CMYK	cmyk(80.2%, 52.9%, 0%, 52.5%)
CIE-LAB	lab(25.26, 13.05, -39.98)
CIE-LCH	lch(25.26, 42.06, 288.08°)
OKLab	oklab(36.01% -0.0164 -0.1151)
OKLCH	oklch(36.01% 0.116 261.9)
XYZ	xyz(5.2898, 4.5003, 18.6753)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183979 #795818

analogous

#186979 #183979 #271879

triadic

#183979 #791839 #397918

tetradic

#183979 #791869 #795818 #187927

square

#183979 #791869 #795818 #187927

split-complementary

#183979 #792718 #697918

monochromatic

#050C1A #0E2146 #183979 #2251AC #356CD7

Accessibility & contrast

On white

11.05

#183979 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#183979 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183979

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183979	#FFFFFF	#000000	##FFFFFF
##183979	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10417B

Deuteranopia (green-blind)

#003878

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183979;
/* rgb */ color: rgb(24, 57, 121);
/* oklch */ color: oklch(36.0% 0.116 261.9);

Tailwind

colors: {
  custom: {
    50: '#656ea0',
    500: '#183979',
    950: '#000000',
  },
}

SCSS

$custom: #183979;
$custom-light: #656ea0;
$custom-dark: #000000;

JSON

{
  "hex": "#183979",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 121
  },
  "hsl": {
    "h": 219.588,
    "s": 66.897,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36012,
    "c": 0.11622,
    "h": 261.9
  },
  "luminance": 0.04501
}

Semantic roles & 50–950 ramp

primary

#183979

secondary

#AE883F

accent

#AF3EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #183979

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

Preview Lab → · Contrast checker → · Palette generator →