#123E4F#123E4F

#123E4F is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.056 H 227.6°. Best body text is #FFFFFF at 11.49:1 contrast (WCAG AA passes).

Color values

HEX	#123E4F
RGB	rgb(18, 62, 79)
HSL	hsl(197, 63%, 19%)
HSV	hsv(197, 77%, 31%)
CMYK	cmyk(77.2%, 21.5%, 0%, 69%)
CIE-LAB	lab(24.12, -8.47, -14.65)
CIE-LCH	lch(24.12, 16.92, 239.95°)
OKLab	oklab(34.23% -0.0374 -0.041)
OKLCH	oklch(34.23% 0.056 227.6)
XYZ	xyz(3.3828, 4.1380, 8.0160)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E4F #4F2312

analogous

#124F42 #123E4F #12204F

triadic

#123E4F #4F123E #3E4F12

tetradic

#123E4F #42124F #4F2312 #204F12

square

#123E4F #42124F #4F2312 #204F12

split-complementary

#123E4F #4F1220 #4F4212

monochromatic

#061419 #07171D #123E4F #1D6581 #298CB3

Accessibility & contrast

On white

11.49

#123E4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#123E4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E4F

11.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E4F	#FFFFFF	#000000	##FFFFFF
##123E4F	1.00	11.49	1.83	11.49
#FFFFFF	11.49	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353D50

Deuteranopia (green-blind)

#2D374F

Tritanopia (blue-blind)

#004344

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123e4f;
/* rgb */ color: rgb(18, 62, 79);
/* oklch */ color: oklch(34.2% 0.056 227.6);

Tailwind

colors: {
  custom: {
    50: '#597380',
    500: '#123e4f',
    950: '#000000',
  },
}

SCSS

$custom: #123e4f;
$custom-light: #597380;
$custom-dark: #000000;

JSON

{
  "hex": "#123e4f",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 79
  },
  "hsl": {
    "h": 196.721,
    "s": 62.887,
    "l": 19.02
  },
  "oklch": {
    "l": 0.34232,
    "c": 0.05552,
    "h": 227.6
  },
  "luminance": 0.04138
}

Semantic roles & 50–950 ramp

primary

#123E4F

secondary

#884C35

accent

#7042E6

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #123E4F

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

Preview Lab → · Contrast checker → · Palette generator →