#123F4E#123F4E

#123F4E is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.054 H 224.1°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#123F4E
RGB	rgb(18, 63, 78)
HSL	hsl(195, 63%, 19%)
HSV	hsv(195, 77%, 31%)
CMYK	cmyk(76.9%, 19.2%, 0%, 69.4%)
CIE-LAB	lab(24.43, -9.49, -13.52)
CIE-LCH	lch(24.43, 16.51, 234.93°)
OKLab	oklab(34.46% -0.039 -0.0378)
OKLCH	oklch(34.46% 0.054 224.1)
XYZ	xyz(3.4015, 4.2333, 7.8441)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F4E #4E2112

analogous

#124E3F #123F4E #12214E

triadic

#123F4E #4E123F #3F4E12

tetradic

#123F4E #3F124E #4E2112 #214E12

square

#123F4E #3F124E #4E2112 #214E12

split-complementary

#123F4E #4E1221 #4E3F12

monochromatic

#061419 #07171C #123F4E #1D6780 #298FB1

Accessibility & contrast

On white

11.37

#123F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#123F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F4E

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F4E	#FFFFFF	#000000	##FFFFFF
##123F4E	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373D4F

Deuteranopia (green-blind)

#2E374E

Tritanopia (blue-blind)

#004444

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123f4e;
/* rgb */ color: rgb(18, 63, 78);
/* oklch */ color: oklch(34.5% 0.054 224.1);

Tailwind

colors: {
  custom: {
    50: '#59747f',
    500: '#123f4e',
    950: '#000000',
  },
}

SCSS

$custom: #123f4e;
$custom-light: #59747f;
$custom-dark: #000000;

JSON

{
  "hex": "#123f4e",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 78
  },
  "hsl": {
    "h": 195,
    "s": 62.5,
    "l": 18.824
  },
  "oklch": {
    "l": 0.34462,
    "c": 0.05433,
    "h": 224.1
  },
  "luminance": 0.04234
}

Semantic roles & 50–950 ramp

primary

#123F4E

secondary

#874935

accent

#6B42E6

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #123F4E

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

Preview Lab → · Contrast checker → · Palette generator →