#12174B#12174B

#12174B is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.9% C 0.095 H 272.6°. Best body text is #FFFFFF at 16.80:1 contrast (WCAG AA passes).

Color values

HEX	#12174B
RGB	rgb(18, 23, 75)
HSL	hsl(235, 61%, 18%)
HSV	hsv(235, 76%, 29%)
CMYK	cmyk(76%, 69.3%, 0%, 70.6%)
CIE-LAB	lab(10.92, 17.88, -32.94)
CIE-LCH	lch(10.92, 37.49, 298.50°)
OKLab	oklab(23.92% 0.0044 -0.0951)
OKLCH	oklch(23.92% 0.095 272.6)
XYZ	xyz(1.8254, 1.2492, 6.8002)
Luminance	0.0125 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12174B #4B4612

analogous

#12334B #12174B #29124B

triadic

#12174B #4B1217 #174B12

tetradic

#12174B #4B1233 #4B4612 #124B29

square

#12174B #4B1233 #4B4612 #124B29

split-complementary

#12174B #4B2912 #334B12

monochromatic

#060819 #06081A #12174B #1E267C #2A35AE

Accessibility & contrast

On white

16.80

#12174B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#12174B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12174B

16.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12174B	#FFFFFF	#000000	##FFFFFF
##12174B	1.00	16.80	1.25	16.80
#FFFFFF	16.80	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204D

Deuteranopia (green-blind)

#001B4A

Tritanopia (blue-blind)

#00242E

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #12174b;
/* rgb */ color: rgb(18, 23, 75);
/* oklch */ color: oklch(23.9% 0.095 272.6);

Tailwind

colors: {
  custom: {
    50: '#59537e',
    500: '#12174b',
    950: '#000000',
  },
}

SCSS

$custom: #12174b;
$custom-light: #59537e;
$custom-dark: #000000;

JSON

{
  "hex": "#12174b",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 75
  },
  "hsl": {
    "h": 234.737,
    "s": 61.29,
    "l": 18.235
  },
  "oklch": {
    "l": 0.23919,
    "c": 0.09517,
    "h": 272.6
  },
  "luminance": 0.01249
}

Semantic roles & 50–950 ramp

primary

#12174B

secondary

#847D35

accent

#D643E4

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #12174B

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

Preview Lab → · Contrast checker → · Palette generator →