#123E66#123E66

#123E66 is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.6% C 0.084 H 249.8°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#123E66
RGB	rgb(18, 62, 102)
HSL	hsl(209, 70%, 24%)
HSV	hsv(209, 82%, 40%)
CMYK	cmyk(82.4%, 39.2%, 0%, 60%)
CIE-LAB	lab(25.36, 0.84, -27.71)
CIE-LCH	lch(25.36, 27.72, 271.74°)
OKLab	oklab(35.62% -0.0291 -0.079)
OKLCH	oklch(35.62% 0.084 249.8)
XYZ	xyz(4.3694, 4.5326, 13.2124)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E66 #663A12

analogous

#126664 #123E66 #121466

triadic

#123E66 #66123E #3E6612

tetradic

#123E66 #641266 #663A12 #146612

square

#123E66 #641266 #663A12 #146612

split-complementary

#123E66 #661214 #666412

monochromatic

#05101A #091E32 #123E66 #1B5E9A #247DCE

Accessibility & contrast

On white

11.01

#123E66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#123E66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E66

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E66	#FFFFFF	#000000	##FFFFFF
##123E66	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4068

Deuteranopia (green-blind)

#1F3965

Tritanopia (blue-blind)

#00484D

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #123e66;
/* rgb */ color: rgb(18, 62, 102);
/* oklch */ color: oklch(35.6% 0.084 249.8);

Tailwind

colors: {
  custom: {
    50: '#5e7292',
    500: '#123e66',
    950: '#000000',
  },
}

SCSS

$custom: #123e66;
$custom-light: #5e7292;
$custom-dark: #000000;

JSON

{
  "hex": "#123e66",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 102
  },
  "hsl": {
    "h": 208.571,
    "s": 70,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35618,
    "c": 0.08413,
    "h": 249.8
  },
  "luminance": 0.04533
}

Semantic roles & 50–950 ramp

primary

#123E66

secondary

#9E6736

accent

#903BED

background

#F5F6F9

surface

#EAECF1

border

#C6C7CB

text

#05080D

muted

#797B7E

Preview Lab

Preview with #123E66

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

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