#183680#183680

#183680 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.130 H 264.2°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#183680
RGB	rgb(24, 54, 128)
HSL	hsl(223, 68%, 30%)
HSV	hsv(223, 81%, 50%)
CMYK	cmyk(81.3%, 57.8%, 0%, 49.8%)
CIE-LAB	lab(24.92, 18.06, -44.94)
CIE-LCH	lch(24.92, 48.44, 291.90°)
OKLab	oklab(35.93% -0.0133 -0.1297)
OKLCH	oklch(35.93% 0.13 264.2)
XYZ	xyz(5.5908, 4.3904, 20.9707)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183680 #806218

analogous

#186A80 #183680 #2E1880

triadic

#183680 #801836 #368018

tetradic

#183680 #80186A #806218 #18802E

square

#183680 #80186A #806218 #18802E

split-complementary

#183680 #802E18 #6A8018

monochromatic

#050B1A #0E204C #183680 #224CB4 #3967DA

Accessibility & contrast

On white

11.18

#183680 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#183680 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183680

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183680	#FFFFFF	#000000	##FFFFFF
##183680	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004083

Deuteranopia (green-blind)

#00377F

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183680;
/* rgb */ color: rgb(24, 54, 128);
/* oklch */ color: oklch(35.9% 0.130 264.2);

Tailwind

colors: {
  custom: {
    50: '#676ca5',
    500: '#183680',
    950: '#000000',
  },
}

SCSS

$custom: #183680;
$custom-light: #676ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#183680",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 128
  },
  "hsl": {
    "h": 222.692,
    "s": 68.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.35928,
    "c": 0.13039,
    "h": 264.2
  },
  "luminance": 0.04391
}

Semantic roles & 50–950 ramp

primary

#183680

secondary

#B49340

accent

#B93DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #183680

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

Preview Lab → · Contrast checker → · Palette generator →