#123E4E#123E4E

#123E4E is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.055 H 226.1°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#123E4E
RGB	rgb(18, 62, 78)
HSL	hsl(196, 63%, 19%)
HSV	hsv(196, 77%, 31%)
CMYK	cmyk(76.9%, 20.5%, 0%, 69.4%)
CIE-LAB	lab(24.08, -8.86, -14.06)
CIE-LCH	lch(24.08, 16.62, 237.79°)
OKLab	oklab(34.18% -0.0378 -0.0394)
OKLCH	oklch(34.18% 0.055 226.1)
XYZ	xyz(3.3467, 4.1235, 7.8258)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E4E #4E2212

analogous

#124E40 #123E4E #12204E

triadic

#123E4E #4E123E #3E4E12

tetradic

#123E4E #40124E #4E2212 #204E12

square

#123E4E #40124E #4E2212 #204E12

split-complementary

#123E4E #4E1220 #4E4012

monochromatic

#061419 #07161C #123E4E #1D6680 #298DB1

Accessibility & contrast

On white

11.51

#123E4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#123E4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E4E

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E4E	#FFFFFF	#000000	##FFFFFF
##123E4E	1.00	11.51	1.82	11.51
#FFFFFF	11.51	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353D4F

Deuteranopia (green-blind)

#2D374E

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123e4e;
/* rgb */ color: rgb(18, 62, 78);
/* oklch */ color: oklch(34.2% 0.055 226.1);

Tailwind

colors: {
  custom: {
    50: '#59737f',
    500: '#123e4e',
    950: '#000000',
  },
}

SCSS

$custom: #123e4e;
$custom-light: #59737f;
$custom-dark: #000000;

JSON

{
  "hex": "#123e4e",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 78
  },
  "hsl": {
    "h": 196,
    "s": 62.5,
    "l": 18.824
  },
  "oklch": {
    "l": 0.34179,
    "c": 0.0546,
    "h": 226.1
  },
  "luminance": 0.04124
}

Semantic roles & 50–950 ramp

primary

#123E4E

secondary

#874B35

accent

#6E42E6

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #123E4E

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

Preview Lab → · Contrast checker → · Palette generator →