#12366F#12366F

#12366F is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.3% C 0.107 H 259.5°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#12366F
RGB	rgb(18, 54, 111)
HSL	hsl(217, 72%, 25%)
HSV	hsv(217, 84%, 44%)
CMYK	cmyk(83.8%, 51.4%, 0%, 56.5%)
CIE-LAB	lab(23.39, 10.27, -36.65)
CIE-LCH	lch(23.39, 38.06, 285.65°)
OKLab	oklab(34.28% -0.0196 -0.1054)
OKLCH	oklch(34.28% 0.107 259.5)
XYZ	xyz(4.4368, 3.9141, 15.5575)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12366F #6F4B12

analogous

#12646F #12366F #1C126F

triadic

#12366F #6F1236 #366F12

tetradic

#12366F #6F1264 #6F4B12 #126F1C

square

#12366F #6F1264 #6F4B12 #126F1C

split-complementary

#12366F #6F1C12 #646F12

monochromatic

#040D1A #091C3A #12366F #1B50A4 #2369D8

Accessibility & contrast

On white

11.78

#12366F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#12366F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12366F

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12366F	#FFFFFF	#000000	##FFFFFF
##12366F	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#143C71

Deuteranopia (green-blind)

#00346E

Tritanopia (blue-blind)

#00444D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #12366f;
/* rgb */ color: rgb(18, 54, 111);
/* oklch */ color: oklch(34.3% 0.107 259.5);

Tailwind

colors: {
  custom: {
    50: '#616c99',
    500: '#12366f',
    950: '#000000',
  },
}

SCSS

$custom: #12366f;
$custom-light: #616c99;
$custom-dark: #000000;

JSON

{
  "hex": "#12366f",
  "rgb": {
    "r": 18,
    "g": 54,
    "b": 111
  },
  "hsl": {
    "h": 216.774,
    "s": 72.093,
    "l": 25.294
  },
  "oklch": {
    "l": 0.3428,
    "c": 0.10721,
    "h": 259.5
  },
  "luminance": 0.03915
}

Semantic roles & 50–950 ramp

primary

#12366F

secondary

#A67B37

accent

#A839EF

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #12366F

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

Preview Lab → · Contrast checker → · Palette generator →