#123B5C#123B5C

#123B5C is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.2% C 0.073 H 246.7°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#123B5C
RGB	rgb(18, 59, 92)
HSL	hsl(207, 67%, 22%)
HSV	hsv(207, 80%, 36%)
CMYK	cmyk(80.4%, 35.9%, 0%, 63.9%)
CIE-LAB	lab(23.77, -1.28, -23.74)
CIE-LCH	lch(23.77, 23.77, 266.92°)
OKLab	oklab(34.17% -0.029 -0.0674)
OKLCH	oklch(34.17% 0.073 246.7)
XYZ	xyz(3.7444, 4.0288, 10.7034)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B5C #5C3312

analogous

#125C58 #123B5C #12165C

triadic

#123B5C #5C123B #3B5C12

tetradic

#123B5C #58125C #5C3312 #165C12

square

#123B5C #58125C #5C3312 #165C12

split-complementary

#123B5C #5C1216 #5C5812

monochromatic

#05101A #081A29 #123B5C #1C5C8F #267DC2

Accessibility & contrast

On white

11.63

#123B5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#123B5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B5C

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B5C	#FFFFFF	#000000	##FFFFFF
##123B5C	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3C5D

Deuteranopia (green-blind)

#21355B

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123b5c;
/* rgb */ color: rgb(18, 59, 92);
/* oklch */ color: oklch(34.2% 0.073 246.7);

Tailwind

colors: {
  custom: {
    50: '#5c708a',
    500: '#123b5c',
    950: '#000000',
  },
}

SCSS

$custom: #123b5c;
$custom-light: #5c708a;
$custom-dark: #000000;

JSON

{
  "hex": "#123b5c",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 92
  },
  "hsl": {
    "h": 206.757,
    "s": 67.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.34173,
    "c": 0.0734,
    "h": 246.7
  },
  "luminance": 0.04029
}

Semantic roles & 50–950 ramp

primary

#123B5C

secondary

#946035

accent

#8B3EEA

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123B5C

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

Preview Lab → · Contrast checker → · Palette generator →