#123D57#123D57

#123D57 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.4% C 0.065 H 239.5°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#123D57
RGB	rgb(18, 61, 87)
HSL	hsl(203, 66%, 21%)
HSV	hsv(203, 79%, 34%)
CMYK	cmyk(79.3%, 29.9%, 0%, 65.9%)
CIE-LAB	lab(24.17, -4.66, -19.83)
CIE-LCH	lch(24.17, 20.37, 256.77°)
OKLab	oklab(34.41% -0.033 -0.056)
OKLCH	oklch(34.41% 0.065 239.5)
XYZ	xyz(3.6378, 4.1538, 9.6250)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D57 #572C12

analogous

#12574E #123D57 #121A57

triadic

#123D57 #57123D #3D5712

tetradic

#123D57 #4E1257 #572C12 #1A5712

square

#123D57 #4E1257 #572C12 #1A5712

split-complementary

#123D57 #57121A #574E12

monochromatic

#051219 #081924 #123D57 #1C618A #2784BC

Accessibility & contrast

On white

11.47

#123D57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#123D57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D57

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D57	#FFFFFF	#000000	##FFFFFF
##123D57	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313D58

Deuteranopia (green-blind)

#273757

Tritanopia (blue-blind)

#004446

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123d57;
/* rgb */ color: rgb(18, 61, 87);
/* oklch */ color: oklch(34.4% 0.065 239.5);

Tailwind

colors: {
  custom: {
    50: '#5b7286',
    500: '#123d57',
    950: '#000000',
  },
}

SCSS

$custom: #123d57;
$custom-light: #5b7286;
$custom-dark: #000000;

JSON

{
  "hex": "#123d57",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 87
  },
  "hsl": {
    "h": 202.609,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.34405,
    "c": 0.065,
    "h": 239.5
  },
  "luminance": 0.04154
}

Semantic roles & 50–950 ramp

primary

#123D57

secondary

#905735

accent

#7F3FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123D57

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

Preview Lab → · Contrast checker → · Palette generator →