#123C5D#123C5D

#123C5D is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.074 H 246.2°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#123C5D
RGB	rgb(18, 60, 93)
HSL	hsl(206, 68%, 22%)
HSV	hsv(206, 81%, 36%)
CMYK	cmyk(80.6%, 35.5%, 0%, 63.5%)
CIE-LAB	lab(24.16, -1.54, -23.77)
CIE-LCH	lch(24.16, 23.82, 266.29°)
OKLab	oklab(34.5% -0.0298 -0.0675)
OKLCH	oklch(34.5% 0.074 246.2)
XYZ	xyz(3.8403, 4.1502, 10.9525)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C5D #5D3312

analogous

#125D59 #123C5D #12175D

triadic

#123C5D #5D123C #3C5D12

tetradic

#123C5D #59125D #5D3312 #175D12

square

#123C5D #59125D #5D3312 #175D12

split-complementary

#123C5D #5D1217 #5D5912

monochromatic

#05111A #081B2A #123C5D #1C5D90 #267EC4

Accessibility & contrast

On white

11.47

#123C5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#123C5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C5D

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C5D	#FFFFFF	#000000	##FFFFFF
##123C5D	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3D5E

Deuteranopia (green-blind)

#22365C

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123c5d;
/* rgb */ color: rgb(18, 60, 93);
/* oklch */ color: oklch(34.5% 0.074 246.2);

Tailwind

colors: {
  custom: {
    50: '#5c718b',
    500: '#123c5d',
    950: '#000000',
  },
}

SCSS

$custom: #123c5d;
$custom-light: #5c718b;
$custom-dark: #000000;

JSON

{
  "hex": "#123c5d",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 93
  },
  "hsl": {
    "h": 206.4,
    "s": 67.568,
    "l": 21.765
  },
  "oklch": {
    "l": 0.34503,
    "c": 0.07375,
    "h": 246.2
  },
  "luminance": 0.04151
}

Semantic roles & 50–950 ramp

primary

#123C5D

secondary

#956035

accent

#8A3DEA

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123C5D

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

Preview Lab → · Contrast checker → · Palette generator →