#123C5C#123C5C

#123C5C is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.4% C 0.072 H 245.4°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#123C5C
RGB	rgb(18, 60, 92)
HSL	hsl(206, 67%, 22%)
HSV	hsv(206, 80%, 36%)
CMYK	cmyk(80.4%, 34.8%, 0%, 63.9%)
CIE-LAB	lab(24.11, -1.95, -23.21)
CIE-LCH	lch(24.11, 23.29, 265.19°)
OKLab	oklab(34.44% -0.0301 -0.0658)
OKLCH	oklch(34.44% 0.072 245.4)
XYZ	xyz(3.7963, 4.1326, 10.7207)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C5C #5C3212

analogous

#125C57 #123C5C #12175C

triadic

#123C5C #5C123C #3C5C12

tetradic

#123C5C #57125C #5C3212 #175C12

square

#123C5C #57125C #5C3212 #175C12

split-complementary

#123C5C #5C1217 #5C5712

monochromatic

#05111A #081B29 #123C5C #1C5D8F #267FC2

Accessibility & contrast

On white

11.50

#123C5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#123C5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C5C

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C5C	#FFFFFF	#000000	##FFFFFF
##123C5C	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3D5D

Deuteranopia (green-blind)

#23365B

Tritanopia (blue-blind)

#004447

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123c5c;
/* rgb */ color: rgb(18, 60, 92);
/* oklch */ color: oklch(34.4% 0.072 245.4);

Tailwind

colors: {
  custom: {
    50: '#5c718a',
    500: '#123c5c',
    950: '#000000',
  },
}

SCSS

$custom: #123c5c;
$custom-light: #5c718a;
$custom-dark: #000000;

JSON

{
  "hex": "#123c5c",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 92
  },
  "hsl": {
    "h": 205.946,
    "s": 67.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.3444,
    "c": 0.0724,
    "h": 245.4
  },
  "luminance": 0.04133
}

Semantic roles & 50–950 ramp

primary

#123C5C

secondary

#945E35

accent

#883EEA

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123C5C

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

Preview Lab → · Contrast checker → · Palette generator →