#180F4D#180F4D

#180F4D is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.1% C 0.107 H 280.6°. Best body text is #FFFFFF at 17.29:1 contrast (WCAG AA passes).

Color values

HEX	#180F4D
RGB	rgb(24, 15, 77)
HSL	hsl(249, 67%, 18%)
HSV	hsv(249, 81%, 30%)
CMYK	cmyk(68.8%, 80.5%, 0%, 69.8%)
CIE-LAB	lab(9.57, 25.15, -36.51)
CIE-LCH	lch(9.57, 44.33, 304.56°)
OKLab	oklab(23.14% 0.0196 -0.1053)
OKLCH	oklch(23.14% 0.107 280.6)
XYZ	xyz(1.8866, 1.0715, 7.1271)
Luminance	0.0107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.75

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180F4D #444D0F

analogous

#0F254D #180F4D #370F4D

triadic

#180F4D #4D180F #0F4D18

tetradic

#180F4D #4D0F25 #444D0F #0F4D37

square

#180F4D #4D0F25 #444D0F #0F4D37

split-complementary

#180F4D #4D370F #254D0F

monochromatic

#08051A #08051A #180F4D #281980 #3823B3

Accessibility & contrast

On white

17.29

#180F4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#180F4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180F4D

17.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180F4D	#FFFFFF	#000000	##FFFFFF
##180F4D	1.00	17.29	1.21	17.29
#FFFFFF	17.29	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D4F

Deuteranopia (green-blind)

#00184C

Tritanopia (blue-blind)

#00202D

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #180f4d;
/* rgb */ color: rgb(24, 15, 77);
/* oklch */ color: oklch(23.1% 0.107 280.6);

Tailwind

colors: {
  custom: {
    50: '#5d4e80',
    500: '#180f4d',
    950: '#000000',
  },
}

SCSS

$custom: #180f4d;
$custom-light: #5d4e80;
$custom-dark: #000000;

JSON

{
  "hex": "#180f4d",
  "rgb": {
    "r": 24,
    "g": 15,
    "b": 77
  },
  "hsl": {
    "h": 248.71,
    "s": 67.391,
    "l": 18.039
  },
  "oklch": {
    "l": 0.23143,
    "c": 0.10714,
    "h": 280.6
  },
  "luminance": 0.01072
}

Semantic roles & 50–950 ramp

primary

#180F4D

secondary

#7B8731

accent

#EA3ED1

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #180F4D

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

Preview Lab → · Contrast checker → · Palette generator →