#123D4E#123D4E

#123D4E is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.9% C 0.055 H 228.1°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#123D4E
RGB	rgb(18, 61, 78)
HSL	hsl(197, 63%, 19%)
HSV	hsv(197, 77%, 31%)
CMYK	cmyk(76.9%, 21.8%, 0%, 69.4%)
CIE-LAB	lab(23.72, -8.23, -14.60)
CIE-LCH	lch(23.72, 16.76, 240.61°)
OKLab	oklab(33.9% -0.0367 -0.0409)
OKLCH	oklch(33.9% 0.055 228.1)
XYZ	xyz(3.2928, 4.0158, 7.8078)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D4E #4E2312

analogous

#124E41 #123D4E #121F4E

triadic

#123D4E #4E123D #3D4E12

tetradic

#123D4E #41124E #4E2312 #1F4E12

square

#123D4E #41124E #4E2312 #1F4E12

split-complementary

#123D4E #4E121F #4E4112

monochromatic

#061319 #07161C #123D4E #1D6480 #298BB1

Accessibility & contrast

On white

11.65

#123D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#123D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D4E

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D4E	#FFFFFF	#000000	##FFFFFF
##123D4E	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343C4F

Deuteranopia (green-blind)

#2C364E

Tritanopia (blue-blind)

#004243

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123d4e;
/* rgb */ color: rgb(18, 61, 78);
/* oklch */ color: oklch(33.9% 0.055 228.1);

Tailwind

colors: {
  custom: {
    50: '#59727f',
    500: '#123d4e',
    950: '#000000',
  },
}

SCSS

$custom: #123d4e;
$custom-light: #59727f;
$custom-dark: #000000;

JSON

{
  "hex": "#123d4e",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 78
  },
  "hsl": {
    "h": 197,
    "s": 62.5,
    "l": 18.824
  },
  "oklch": {
    "l": 0.33898,
    "c": 0.05493,
    "h": 228.1
  },
  "luminance": 0.04016
}

Semantic roles & 50–950 ramp

primary

#123D4E

secondary

#874C35

accent

#7142E6

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #123D4E

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

Preview Lab → · Contrast checker → · Palette generator →