#123C57#123C57

#123C57 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.1% C 0.066 H 241.0°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#123C57
RGB	rgb(18, 60, 87)
HSL	hsl(203, 66%, 21%)
HSV	hsv(203, 79%, 34%)
CMYK	cmyk(79.3%, 31%, 0%, 65.9%)
CIE-LAB	lab(23.83, -4.00, -20.37)
CIE-LCH	lch(23.83, 20.76, 258.89°)
OKLab	oklab(34.13% -0.0319 -0.0576)
OKLCH	oklch(34.13% 0.066 241)
XYZ	xyz(3.5849, 4.0480, 9.6074)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C57 #572D12

analogous

#12574F #123C57 #121A57

triadic

#123C57 #57123C #3C5712

tetradic

#123C57 #4F1257 #572D12 #1A5712

square

#123C57 #4F1257 #572D12 #1A5712

split-complementary

#123C57 #57121A #574F12

monochromatic

#051119 #081924 #123C57 #1C5F8A #2782BC

Accessibility & contrast

On white

11.60

#123C57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#123C57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C57

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C57	#FFFFFF	#000000	##FFFFFF
##123C57	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3C58

Deuteranopia (green-blind)

#263657

Tritanopia (blue-blind)

#004345

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123c57;
/* rgb */ color: rgb(18, 60, 87);
/* oklch */ color: oklch(34.1% 0.066 241.0);

Tailwind

colors: {
  custom: {
    50: '#5b7186',
    500: '#123c57',
    950: '#000000',
  },
}

SCSS

$custom: #123c57;
$custom-light: #5b7186;
$custom-dark: #000000;

JSON

{
  "hex": "#123c57",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 87
  },
  "hsl": {
    "h": 203.478,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.34132,
    "c": 0.0658,
    "h": 241
  },
  "luminance": 0.04048
}

Semantic roles & 50–950 ramp

primary

#123C57

secondary

#905935

accent

#813FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123C57

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

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