#123E6A#123E6A

#123E6A is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.9% C 0.090 H 251.9°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#123E6A
RGB	rgb(18, 62, 106)
HSL	hsl(210, 71%, 24%)
HSV	hsv(210, 83%, 42%)
CMYK	cmyk(83%, 41.5%, 0%, 58.4%)
CIE-LAB	lab(25.61, 2.52, -29.89)
CIE-LCH	lch(25.61, 29.99, 274.81°)
OKLab	oklab(35.89% -0.0279 -0.0853)
OKLCH	oklch(35.89% 0.09 251.9)
XYZ	xyz(4.5726, 4.6139, 14.2825)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E6A #6A3E12

analogous

#126A6A #123E6A #12126A

triadic

#123E6A #6A123E #3E6A12

tetradic

#123E6A #6A126A #6A3E12 #126A12

square

#123E6A #6A126A #6A3E12 #126A12

split-complementary

#123E6A #6A1212 #6A6A12

monochromatic

#040F1A #091F36 #123E6A #1B5D9E #247BD3

Accessibility & contrast

On white

10.92

#123E6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#123E6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E6A

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E6A	#FFFFFF	#000000	##FFFFFF
##123E6A	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29416C

Deuteranopia (green-blind)

#1B3969

Tritanopia (blue-blind)

#00484E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #123e6a;
/* rgb */ color: rgb(18, 62, 106);
/* oklch */ color: oklch(35.9% 0.090 251.9);

Tailwind

colors: {
  custom: {
    50: '#5f7295',
    500: '#123e6a',
    950: '#000000',
  },
}

SCSS

$custom: #123e6a;
$custom-light: #5f7295;
$custom-dark: #000000;

JSON

{
  "hex": "#123e6a",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 106
  },
  "hsl": {
    "h": 210,
    "s": 70.968,
    "l": 24.314
  },
  "oklch": {
    "l": 0.3589,
    "c": 0.0898,
    "h": 251.9
  },
  "luminance": 0.04614
}

Semantic roles & 50–950 ramp

primary

#123E6A

secondary

#A26C36

accent

#943AEE

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #123E6A

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

Preview Lab → · Contrast checker → · Palette generator →