#123C5F#123C5F

#123C5F is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.6% C 0.077 H 247.6°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#123C5F
RGB	rgb(18, 60, 95)
HSL	hsl(207, 68%, 22%)
HSV	hsv(207, 81%, 37%)
CMYK	cmyk(81.1%, 36.8%, 0%, 62.7%)
CIE-LAB	lab(24.28, -0.71, -24.89)
CIE-LCH	lch(24.28, 24.90, 268.36°)
OKLab	oklab(34.63% -0.0291 -0.0707)
OKLCH	oklch(34.63% 0.077 247.6)
XYZ	xyz(3.9301, 4.1861, 11.4251)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C5F #5F3512

analogous

#125F5C #123C5F #12155F

triadic

#123C5F #5F123C #3C5F12

tetradic

#123C5F #5C125F #5F3512 #155F12

square

#123C5F #5C125F #5F3512 #155F12

split-complementary

#123C5F #5F1215 #5F5C12

monochromatic

#05101A #081C2C #123C5F #1C5C92 #257DC6

Accessibility & contrast

On white

11.43

#123C5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#123C5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C5F

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C5F	#FFFFFF	#000000	##FFFFFF
##123C5F	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3E60

Deuteranopia (green-blind)

#21365E

Tritanopia (blue-blind)

#004449

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123c5f;
/* rgb */ color: rgb(18, 60, 95);
/* oklch */ color: oklch(34.6% 0.077 247.6);

Tailwind

colors: {
  custom: {
    50: '#5d718c',
    500: '#123c5f',
    950: '#000000',
  },
}

SCSS

$custom: #123c5f;
$custom-light: #5d718c;
$custom-dark: #000000;

JSON

{
  "hex": "#123c5f",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 95
  },
  "hsl": {
    "h": 207.273,
    "s": 68.142,
    "l": 22.157
  },
  "oklch": {
    "l": 0.34632,
    "c": 0.07652,
    "h": 247.6
  },
  "luminance": 0.04187
}

Semantic roles & 50–950 ramp

primary

#123C5F

secondary

#976236

accent

#8C3DEB

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123C5F

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

Preview Lab → · Contrast checker → · Palette generator →