#123B59#123B59

#123B59 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.069 H 244.3°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#123B59
RGB	rgb(18, 59, 89)
HSL	hsl(205, 66%, 21%)
HSV	hsv(205, 80%, 35%)
CMYK	cmyk(79.8%, 33.7%, 0%, 65.1%)
CIE-LAB	lab(23.60, -2.51, -22.04)
CIE-LCH	lch(23.60, 22.19, 263.50°)
OKLab	oklab(33.98% -0.0301 -0.0625)
OKLCH	oklch(33.98% 0.069 244.3)
XYZ	xyz(3.6159, 3.9774, 10.0264)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B59 #593012

analogous

#125953 #123B59 #121759

triadic

#123B59 #59123B #3B5912

tetradic

#123B59 #531259 #593012 #175912

square

#123B59 #531259 #593012 #175912

split-complementary

#123B59 #591217 #595312

monochromatic

#051119 #081926 #123B59 #1C5D8C #277EBF

Accessibility & contrast

On white

11.70

#123B59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#123B59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B59

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B59	#FFFFFF	#000000	##FFFFFF
##123B59	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3C5A

Deuteranopia (green-blind)

#233558

Tritanopia (blue-blind)

#004246

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123b59;
/* rgb */ color: rgb(18, 59, 89);
/* oklch */ color: oklch(34.0% 0.069 244.3);

Tailwind

colors: {
  custom: {
    50: '#5b7088',
    500: '#123b59',
    950: '#000000',
  },
}

SCSS

$custom: #123b59;
$custom-light: #5b7088;
$custom-dark: #000000;

JSON

{
  "hex": "#123b59",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 89
  },
  "hsl": {
    "h": 205.352,
    "s": 66.355,
    "l": 20.98
  },
  "oklch": {
    "l": 0.33984,
    "c": 0.06932,
    "h": 244.3
  },
  "luminance": 0.03978
}

Semantic roles & 50–950 ramp

primary

#123B59

secondary

#925C35

accent

#873FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123B59

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

Preview Lab → · Contrast checker → · Palette generator →