#12243F#12243F

#12243F is a dark, muted blue. Relative luminance 0.017; OKLCH L 26.0% C 0.056 H 258.3°. Best body text is #FFFFFF at 15.56:1 contrast (WCAG AA passes).

Color values

HEX	#12243F
RGB	rgb(18, 36, 63)
HSL	hsl(216, 56%, 16%)
HSV	hsv(216, 71%, 25%)
CMYK	cmyk(71.4%, 42.9%, 0%, 75.3%)
CIE-LAB	lab(14.11, 2.92, -19.44)
CIE-LCH	lch(14.11, 19.66, 278.54°)
OKLab	oklab(26.04% -0.0114 -0.0552)
OKLCH	oklch(26.04% 0.056 258.3)
XYZ	xyz(1.7772, 1.7491, 4.9456)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12243F #3F2D12

analogous

#123A3F #12243F #16123F

triadic

#12243F #3F1224 #243F12

tetradic

#12243F #3F123A #3F2D12 #123F16

square

#12243F #3F123A #3F2D12 #123F16

split-complementary

#12243F #3F1612 #3A3F12

monochromatic

#070E18 #070E18 #12243F #203F6F #2D5A9E

Accessibility & contrast

On white

15.56

#12243F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#12243F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12243F

15.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12243F	#FFFFFF	#000000	##FFFFFF
##12243F	1.00	15.56	1.35	15.56
#FFFFFF	15.56	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#182640

Deuteranopia (green-blind)

#12223E

Tritanopia (blue-blind)

#002A2E

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #12243f;
/* rgb */ color: rgb(18, 36, 63);
/* oklch */ color: oklch(26.0% 0.056 258.3);

Tailwind

colors: {
  custom: {
    50: '#555e74',
    500: '#12243f',
    950: '#000000',
  },
}

SCSS

$custom: #12243f;
$custom-light: #555e74;
$custom-dark: #000000;

JSON

{
  "hex": "#12243f",
  "rgb": {
    "r": 18,
    "g": 36,
    "b": 63
  },
  "hsl": {
    "h": 216,
    "s": 55.556,
    "l": 15.882
  },
  "oklch": {
    "l": 0.26036,
    "c": 0.05637,
    "h": 258.3
  },
  "luminance": 0.01749
}

Semantic roles & 50–950 ramp

primary

#12243F

secondary

#785D35

accent

#A349DF

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030408

muted

#78797B

Preview Lab

Preview with #12243F

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

Preview Lab → · Contrast checker → · Palette generator →