#123E51#123E51

#123E51 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.3% C 0.058 H 230.5°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#123E51
RGB	rgb(18, 62, 81)
HSL	hsl(198, 64%, 19%)
HSV	hsv(198, 78%, 32%)
CMYK	cmyk(77.8%, 23.5%, 0%, 68.2%)
CIE-LAB	lab(24.22, -7.69, -15.82)
CIE-LCH	lch(24.22, 17.59, 244.06°)
OKLab	oklab(34.34% -0.0366 -0.0444)
OKLCH	oklch(34.34% 0.058 230.5)
XYZ	xyz(3.4567, 4.1675, 8.4052)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E51 #512512

analogous

#125145 #123E51 #121F51

triadic

#123E51 #51123E #3E5112

tetradic

#123E51 #451251 #512512 #1F5112

square

#123E51 #451251 #512512 #1F5112

split-complementary

#123E51 #51121F #514512

monochromatic

#061319 #07181F #123E51 #1D6483 #288BB5

Accessibility & contrast

On white

11.45

#123E51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#123E51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E51

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E51	#FFFFFF	#000000	##FFFFFF
##123E51	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343D52

Deuteranopia (green-blind)

#2C3751

Tritanopia (blue-blind)

#004344

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123e51;
/* rgb */ color: rgb(18, 62, 81);
/* oklch */ color: oklch(34.3% 0.058 230.5);

Tailwind

colors: {
  custom: {
    50: '#5a7382',
    500: '#123e51',
    950: '#000000',
  },
}

SCSS

$custom: #123e51;
$custom-light: #5a7382;
$custom-dark: #000000;

JSON

{
  "hex": "#123e51",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 81
  },
  "hsl": {
    "h": 198.095,
    "s": 63.636,
    "l": 19.412
  },
  "oklch": {
    "l": 0.3434,
    "c": 0.05751,
    "h": 230.5
  },
  "luminance": 0.04168
}

Semantic roles & 50–950 ramp

primary

#123E51

secondary

#8A4F35

accent

#7341E7

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #123E51

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

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