#123A59#123A59

#123A59 is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.7% C 0.070 H 245.7°. Best body text is #FFFFFF at 11.83:1 contrast (WCAG AA passes).

Color values

HEX	#123A59
RGB	rgb(18, 58, 89)
HSL	hsl(206, 66%, 21%)
HSV	hsv(206, 80%, 35%)
CMYK	cmyk(79.8%, 34.8%, 0%, 65.1%)
CIE-LAB	lab(23.26, -1.84, -22.58)
CIE-LCH	lch(23.26, 22.66, 265.35°)
OKLab	oklab(33.72% -0.029 -0.064)
OKLCH	oklch(33.72% 0.07 245.7)
XYZ	xyz(3.5650, 3.8756, 10.0094)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123A59 #593112

analogous

#125954 #123A59 #121659

triadic

#123A59 #59123A #3A5912

tetradic

#123A59 #541259 #593112 #165912

square

#123A59 #541259 #593112 #165912

split-complementary

#123A59 #591216 #595412

monochromatic

#051119 #081926 #123A59 #1C5B8C #277CBF

Accessibility & contrast

On white

11.83

#123A59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#123A59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123A59

11.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123A59	#FFFFFF	#000000	##FFFFFF
##123A59	1.00	11.83	1.78	11.83
#FFFFFF	11.83	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3B5A

Deuteranopia (green-blind)

#223458

Tritanopia (blue-blind)

#004145

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #123a59;
/* rgb */ color: rgb(18, 58, 89);
/* oklch */ color: oklch(33.7% 0.070 245.7);

Tailwind

colors: {
  custom: {
    50: '#5b6f88',
    500: '#123a59',
    950: '#000000',
  },
}

SCSS

$custom: #123a59;
$custom-light: #5b6f88;
$custom-dark: #000000;

JSON

{
  "hex": "#123a59",
  "rgb": {
    "r": 18,
    "g": 58,
    "b": 89
  },
  "hsl": {
    "h": 206.197,
    "s": 66.355,
    "l": 20.98
  },
  "oklch": {
    "l": 0.33715,
    "c": 0.07029,
    "h": 245.7
  },
  "luminance": 0.03876
}

Semantic roles & 50–950 ramp

primary

#123A59

secondary

#925E35

accent

#893FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123A59

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

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