#123D5C#123D5C

#123D5C is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.071 H 244.1°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#123D5C
RGB	rgb(18, 61, 92)
HSL	hsl(205, 67%, 22%)
HSV	hsv(205, 80%, 36%)
CMYK	cmyk(80.4%, 33.7%, 0%, 63.9%)
CIE-LAB	lab(24.44, -2.62, -22.67)
CIE-LCH	lch(24.44, 22.82, 263.40°)
OKLab	oklab(34.71% -0.0312 -0.0643)
OKLCH	oklch(34.71% 0.071 244.1)
XYZ	xyz(3.8492, 4.2383, 10.7384)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D5C #5C3112

analogous

#125C56 #123D5C #12185C

triadic

#123D5C #5C123D #3D5C12

tetradic

#123D5C #56125C #5C3112 #185C12

square

#123D5C #56125C #5C3112 #185C12

split-complementary

#123D5C #5C1218 #5C5612

monochromatic

#05111A #081B29 #123D5C #1C5F8F #2681C2

Accessibility & contrast

On white

11.36

#123D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#123D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D5C

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D5C	#FFFFFF	#000000	##FFFFFF
##123D5C	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3E5D

Deuteranopia (green-blind)

#24375B

Tritanopia (blue-blind)

#004548

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123d5c;
/* rgb */ color: rgb(18, 61, 92);
/* oklch */ color: oklch(34.7% 0.071 244.1);

Tailwind

colors: {
  custom: {
    50: '#5c728a',
    500: '#123d5c',
    950: '#000000',
  },
}

SCSS

$custom: #123d5c;
$custom-light: #5c728a;
$custom-dark: #000000;

JSON

{
  "hex": "#123d5c",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 92
  },
  "hsl": {
    "h": 205.135,
    "s": 67.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.34708,
    "c": 0.07144,
    "h": 244.1
  },
  "luminance": 0.04239
}

Semantic roles & 50–950 ramp

primary

#123D5C

secondary

#945D35

accent

#863EEA

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123D5C

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

Preview Lab → · Contrast checker → · Palette generator →