#123C4E#123C4E

#123C4E is a dark, muted cyan. Relative luminance 0.039; OKLCH L 33.6% C 0.055 H 230.1°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#123C4E
RGB	rgb(18, 60, 78)
HSL	hsl(198, 63%, 19%)
HSV	hsv(198, 77%, 31%)
CMYK	cmyk(76.9%, 23.1%, 0%, 69.4%)
CIE-LAB	lab(23.37, -7.59, -15.15)
CIE-LCH	lch(23.37, 16.94, 243.40°)
OKLab	oklab(33.62% -0.0355 -0.0425)
OKLCH	oklch(33.62% 0.055 230.1)
XYZ	xyz(3.2399, 3.9100, 7.7902)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C4E #4E2412

analogous

#124E42 #123C4E #121E4E

triadic

#123C4E #4E123C #3C4E12

tetradic

#123C4E #42124E #4E2412 #1E4E12

square

#123C4E #42124E #4E2412 #1E4E12

split-complementary

#123C4E #4E121E #4E4212

monochromatic

#061319 #07161C #123C4E #1D6280 #2989B1

Accessibility & contrast

On white

11.78

#123C4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#123C4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C4E

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C4E	#FFFFFF	#000000	##FFFFFF
##123C4E	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)

#333B4F

Deuteranopia (green-blind)

#2B354E

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123c4e;
/* rgb */ color: rgb(18, 60, 78);
/* oklch */ color: oklch(33.6% 0.055 230.1);

Tailwind

colors: {
  custom: {
    50: '#59717f',
    500: '#123c4e',
    950: '#000000',
  },
}

SCSS

$custom: #123c4e;
$custom-light: #59717f;
$custom-dark: #000000;

JSON

{
  "hex": "#123c4e",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 78
  },
  "hsl": {
    "h": 198,
    "s": 62.5,
    "l": 18.824
  },
  "oklch": {
    "l": 0.33617,
    "c": 0.05534,
    "h": 230.1
  },
  "luminance": 0.0391
}

Semantic roles & 50–950 ramp

primary

#123C4E

secondary

#874D35

accent

#7342E6

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #123C4E

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

Preview Lab → · Contrast checker → · Palette generator →