#123D59#123D59

#123D59 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.068 H 241.4°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#123D59
RGB	rgb(18, 61, 89)
HSL	hsl(204, 66%, 21%)
HSV	hsv(204, 80%, 35%)
CMYK	cmyk(79.8%, 31.5%, 0%, 65.1%)
CIE-LAB	lab(24.28, -3.85, -20.97)
CIE-LCH	lch(24.28, 21.32, 259.60°)
OKLab	oklab(34.52% -0.0323 -0.0593)
OKLCH	oklch(34.52% 0.068 241.4)
XYZ	xyz(3.7207, 4.1869, 10.0613)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D59 #592E12

analogous

#125951 #123D59 #121959

triadic

#123D59 #59123D #3D5912

tetradic

#123D59 #511259 #592E12 #195912

square

#123D59 #511259 #592E12 #195912

split-complementary

#123D59 #591219 #595112

monochromatic

#051119 #081A26 #123D59 #1C608C #2783BF

Accessibility & contrast

On white

11.43

#123D59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#123D59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D59

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D59	#FFFFFF	#000000	##FFFFFF
##123D59	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303D5A

Deuteranopia (green-blind)

#263758

Tritanopia (blue-blind)

#004447

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123d59;
/* rgb */ color: rgb(18, 61, 89);
/* oklch */ color: oklch(34.5% 0.068 241.4);

Tailwind

colors: {
  custom: {
    50: '#5b7288',
    500: '#123d59',
    950: '#000000',
  },
}

SCSS

$custom: #123d59;
$custom-light: #5b7288;
$custom-dark: #000000;

JSON

{
  "hex": "#123d59",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 89
  },
  "hsl": {
    "h": 203.662,
    "s": 66.355,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34524,
    "c": 0.06752,
    "h": 241.4
  },
  "luminance": 0.04187
}

Semantic roles & 50–950 ramp

primary

#123D59

secondary

#925A35

accent

#823FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123D59

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

Preview Lab → · Contrast checker → · Palette generator →