#123B4B#123B4B

#123B4B is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.2% C 0.053 H 227.6°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#123B4B
RGB	rgb(18, 59, 75)
HSL	hsl(197, 61%, 18%)
HSV	hsv(197, 76%, 29%)
CMYK	cmyk(76%, 21.3%, 0%, 70.6%)
CIE-LAB	lab(22.88, -8.11, -13.92)
CIE-LCH	lch(22.88, 16.11, 239.77°)
OKLab	oklab(33.17% -0.0356 -0.039)
OKLCH	oklch(33.17% 0.053 227.6)
XYZ	xyz(3.0829, 3.7642, 7.2193)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B4B #4B2212

analogous

#124B3E #123B4B #121E4B

triadic

#123B4B #4B123B #3B4B12

tetradic

#123B4B #3E124B #4B2212 #1E4B12

square

#123B4B #3E124B #4B2212 #1E4B12

split-complementary

#123B4B #4B121E #4B3E12

monochromatic

#061319 #06141A #123B4B #1E627C #2A89AE

Accessibility & contrast

On white

11.98

#123B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#123B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B4B

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B4B	#FFFFFF	#000000	##FFFFFF
##123B4B	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333A4C

Deuteranopia (green-blind)

#2B344B

Tritanopia (blue-blind)

#004040

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #123b4b;
/* rgb */ color: rgb(18, 59, 75);
/* oklch */ color: oklch(33.2% 0.053 227.6);

Tailwind

colors: {
  custom: {
    50: '#58717d',
    500: '#123b4b',
    950: '#000000',
  },
}

SCSS

$custom: #123b4b;
$custom-light: #58717d;
$custom-dark: #000000;

JSON

{
  "hex": "#123b4b",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 75
  },
  "hsl": {
    "h": 196.842,
    "s": 61.29,
    "l": 18.235
  },
  "oklch": {
    "l": 0.33174,
    "c": 0.05276,
    "h": 227.6
  },
  "luminance": 0.03765
}

Semantic roles & 50–950 ramp

primary

#123B4B

secondary

#844B35

accent

#7143E4

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #123B4B

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

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