#123F4C#123F4C

#123F4C is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.4% C 0.053 H 220.8°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#123F4C
RGB	rgb(18, 63, 76)
HSL	hsl(193, 62%, 18%)
HSV	hsv(193, 76%, 30%)
CMYK	cmyk(76.3%, 17.1%, 0%, 70.2%)
CIE-LAB	lab(24.34, -10.25, -12.33)
CIE-LCH	lch(24.34, 16.04, 230.28°)
OKLab	oklab(34.36% -0.0399 -0.0344)
OKLCH	oklch(34.36% 0.053 220.8)
XYZ	xyz(3.3309, 4.2050, 7.4722)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F4C #4C1F12

analogous

#124C3C #123F4C #12224C

triadic

#123F4C #4C123F #3F4C12

tetradic

#123F4C #3C124C #4C1F12 #224C12

square

#123F4C #3C124C #4C1F12 #224C12

split-complementary

#123F4C #4C1222 #4C3C12

monochromatic

#061519 #06161B #123F4C #1E687D #2991AF

Accessibility & contrast

On white

11.41

#123F4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#123F4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F4C

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F4C	#FFFFFF	#000000	##FFFFFF
##123F4C	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373D4D

Deuteranopia (green-blind)

#2F374C

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123f4c;
/* rgb */ color: rgb(18, 63, 76);
/* oklch */ color: oklch(34.4% 0.053 220.8);

Tailwind

colors: {
  custom: {
    50: '#59747e',
    500: '#123f4c',
    950: '#000000',
  },
}

SCSS

$custom: #123f4c;
$custom-light: #59747e;
$custom-dark: #000000;

JSON

{
  "hex": "#123f4c",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 76
  },
  "hsl": {
    "h": 193.448,
    "s": 61.702,
    "l": 18.431
  },
  "oklch": {
    "l": 0.3436,
    "c": 0.05273,
    "h": 220.8
  },
  "luminance": 0.04205
}

Semantic roles & 50–950 ramp

primary

#123F4C

secondary

#854735

accent

#6743E5

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #123F4C

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

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