#12347C#12347C

#12347C is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.9% C 0.129 H 262.7°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#12347C
RGB	rgb(18, 52, 124)
HSL	hsl(221, 75%, 28%)
HSV	hsv(221, 85%, 49%)
CMYK	cmyk(85.5%, 58.1%, 0%, 51.4%)
CIE-LAB	lab(23.80, 17.21, -44.26)
CIE-LCH	lch(23.80, 47.48, 291.25°)
OKLab	oklab(34.92% -0.0165 -0.1278)
OKLCH	oklch(34.92% 0.129 262.7)
XYZ	xyz(5.1142, 4.0392, 19.5750)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12347C #7C5A12

analogous

#12697C #12347C #25127C

triadic

#12347C #7C1234 #347C12

tetradic

#12347C #7C1269 #7C5A12 #127C25

square

#12347C #7C1269 #7C5A12 #127C25

split-complementary

#12347C #7C2512 #697C12

monochromatic

#040B1B #0A1E47 #12347C #1A4AB1 #2963E0

Accessibility & contrast

On white

11.62

#12347C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#12347C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12347C

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12347C	#FFFFFF	#000000	##FFFFFF
##12347C	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7E

Deuteranopia (green-blind)

#00347B

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #12347c;
/* rgb */ color: rgb(18, 52, 124);
/* oklch */ color: oklch(34.9% 0.129 262.7);

Tailwind

colors: {
  custom: {
    50: '#656aa3',
    500: '#12347c',
    950: '#000000',
  },
}

SCSS

$custom: #12347c;
$custom-light: #656aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#12347c",
  "rgb": {
    "r": 18,
    "g": 52,
    "b": 124
  },
  "hsl": {
    "h": 220.755,
    "s": 74.648,
    "l": 27.843
  },
  "oklch": {
    "l": 0.34919,
    "c": 0.12888,
    "h": 262.7
  },
  "luminance": 0.0404
}

Semantic roles & 50–950 ramp

primary

#12347C

secondary

#B28B38

accent

#B537F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06060F

muted

#7A7A7F

Preview Lab

Preview with #12347C

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

Preview Lab → · Contrast checker → · Palette generator →