#123C59#123C59

#123C59 is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.068 H 242.9°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#123C59
RGB	rgb(18, 60, 89)
HSL	hsl(205, 66%, 21%)
HSV	hsv(205, 80%, 35%)
CMYK	cmyk(79.8%, 32.6%, 0%, 65.1%)
CIE-LAB	lab(23.94, -3.18, -21.51)
CIE-LCH	lch(23.94, 21.74, 261.58°)
OKLab	oklab(34.25% -0.0312 -0.0609)
OKLCH	oklch(34.25% 0.068 242.9)
XYZ	xyz(3.6678, 4.0812, 10.0437)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C59 #592F12

analogous

#125952 #123C59 #121859

triadic

#123C59 #59123C #3C5912

tetradic

#123C59 #521259 #592F12 #185912

square

#123C59 #521259 #592F12 #185912

split-complementary

#123C59 #591218 #595212

monochromatic

#051119 #081A26 #123C59 #1C5E8C #2781BF

Accessibility & contrast

On white

11.56

#123C59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#123C59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C59

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C59	#FFFFFF	#000000	##FFFFFF
##123C59	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3D5A

Deuteranopia (green-blind)

#253658

Tritanopia (blue-blind)

#004346

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123c59;
/* rgb */ color: rgb(18, 60, 89);
/* oklch */ color: oklch(34.3% 0.068 242.9);

Tailwind

colors: {
  custom: {
    50: '#5b7188',
    500: '#123c59',
    950: '#000000',
  },
}

SCSS

$custom: #123c59;
$custom-light: #5b7188;
$custom-dark: #000000;

JSON

{
  "hex": "#123c59",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 89
  },
  "hsl": {
    "h": 204.507,
    "s": 66.355,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34253,
    "c": 0.0684,
    "h": 242.9
  },
  "luminance": 0.04082
}

Semantic roles & 50–950 ramp

primary

#123C59

secondary

#925B35

accent

#843FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123C59

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

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