#123D4B#123D4B

#123D4B is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.7% C 0.052 H 223.3°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#123D4B
RGB	rgb(18, 61, 75)
HSL	hsl(195, 61%, 18%)
HSV	hsv(195, 76%, 29%)
CMYK	cmyk(76%, 18.7%, 0%, 70.6%)
CIE-LAB	lab(23.58, -9.38, -12.83)
CIE-LCH	lch(23.58, 15.89, 233.84°)
OKLab	oklab(33.74% -0.038 -0.0358)
OKLCH	oklch(33.74% 0.052 223.3)
XYZ	xyz(3.1877, 3.9737, 7.2543)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D4B #4B2012

analogous

#124B3C #123D4B #12204B

triadic

#123D4B #4B123D #3D4B12

tetradic

#123D4B #3C124B #4B2012 #204B12

square

#123D4B #3C124B #4B2012 #204B12

split-complementary

#123D4B #4B1220 #4B3C12

monochromatic

#061419 #06151A #123D4B #1E657C #2A8DAE

Accessibility & contrast

On white

11.70

#123D4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#123D4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D4B

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D4B	#FFFFFF	#000000	##FFFFFF
##123D4B	1.00	11.70	1.79	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353B4C

Deuteranopia (green-blind)

#2D364B

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123d4b;
/* rgb */ color: rgb(18, 61, 75);
/* oklch */ color: oklch(33.7% 0.052 223.3);

Tailwind

colors: {
  custom: {
    50: '#59727d',
    500: '#123d4b',
    950: '#000000',
  },
}

SCSS

$custom: #123d4b;
$custom-light: #59727d;
$custom-dark: #000000;

JSON

{
  "hex": "#123d4b",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 75
  },
  "hsl": {
    "h": 194.737,
    "s": 61.29,
    "l": 18.235
  },
  "oklch": {
    "l": 0.33741,
    "c": 0.05223,
    "h": 223.3
  },
  "luminance": 0.03974
}

Semantic roles & 50–950 ramp

primary

#123D4B

secondary

#844835

accent

#6B43E4

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #123D4B

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

Preview Lab → · Contrast checker → · Palette generator →