#123E4B#123E4B

#123E4B is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.0% C 0.052 H 221.2°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#123E4B
RGB	rgb(18, 62, 75)
HSL	hsl(194, 61%, 18%)
HSV	hsv(194, 76%, 29%)
CMYK	cmyk(76%, 17.3%, 0%, 70.6%)
CIE-LAB	lab(23.94, -10.00, -12.29)
CIE-LCH	lch(23.94, 15.84, 230.84°)
OKLab	oklab(34.03% -0.0392 -0.0343)
OKLCH	oklch(34.03% 0.052 221.2)
XYZ	xyz(3.2416, 4.0815, 7.2722)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E4B #4B1F12

analogous

#124B3B #123E4B #12214B

triadic

#123E4B #4B123E #3E4B12

tetradic

#123E4B #3B124B #4B1F12 #214B12

square

#123E4B #3B124B #4B1F12 #214B12

split-complementary

#123E4B #4B1221 #4B3B12

monochromatic

#061419 #06151A #123E4B #1E677C #2A90AE

Accessibility & contrast

On white

11.56

#123E4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#123E4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E4B

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E4B	#FFFFFF	#000000	##FFFFFF
##123E4B	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363C4C

Deuteranopia (green-blind)

#2E364B

Tritanopia (blue-blind)

#004242

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123e4b;
/* rgb */ color: rgb(18, 62, 75);
/* oklch */ color: oklch(34.0% 0.052 221.2);

Tailwind

colors: {
  custom: {
    50: '#59737d',
    500: '#123e4b',
    950: '#000000',
  },
}

SCSS

$custom: #123e4b;
$custom-light: #59737d;
$custom-dark: #000000;

JSON

{
  "hex": "#123e4b",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 75
  },
  "hsl": {
    "h": 193.684,
    "s": 61.29,
    "l": 18.235
  },
  "oklch": {
    "l": 0.34025,
    "c": 0.05208,
    "h": 221.2
  },
  "luminance": 0.04082
}

Semantic roles & 50–950 ramp

primary

#123E4B

secondary

#844735

accent

#6843E4

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #123E4B

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

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