#123A5E#123A5E

#123A5E is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.077 H 249.3°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#123A5E
RGB	rgb(18, 58, 94)
HSL	hsl(208, 68%, 22%)
HSV	hsv(208, 81%, 37%)
CMYK	cmyk(80.9%, 38.3%, 0%, 63.1%)
CIE-LAB	lab(23.55, 0.24, -25.39)
CIE-LCH	lch(23.55, 25.40, 270.54°)
OKLab	oklab(34.04% -0.0274 -0.0723)
OKLCH	oklch(34.04% 0.077 249.3)
XYZ	xyz(3.7821, 3.9624, 11.1530)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123A5E #5E3612

analogous

#125E5C #123A5E #12145E

triadic

#123A5E #5E123A #3A5E12

tetradic

#123A5E #5C125E #5E3612 #145E12

square

#123A5E #5C125E #5E3612 #145E12

split-complementary

#123A5E #5E1214 #5E5C12

monochromatic

#05101A #081A2B #123A5E #1C5A91 #2679C5

Accessibility & contrast

On white

11.71

#123A5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#123A5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123A5E

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123A5E	#FFFFFF	#000000	##FFFFFF
##123A5E	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293C5F

Deuteranopia (green-blind)

#1E355D

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123a5e;
/* rgb */ color: rgb(18, 58, 94);
/* oklch */ color: oklch(34.0% 0.077 249.3);

Tailwind

colors: {
  custom: {
    50: '#5c6f8c',
    500: '#123a5e',
    950: '#000000',
  },
}

SCSS

$custom: #123a5e;
$custom-light: #5c6f8c;
$custom-dark: #000000;

JSON

{
  "hex": "#123a5e",
  "rgb": {
    "r": 18,
    "g": 58,
    "b": 94
  },
  "hsl": {
    "h": 208.421,
    "s": 67.857,
    "l": 21.961
  },
  "oklch": {
    "l": 0.34039,
    "c": 0.07727,
    "h": 249.3
  },
  "luminance": 0.03963
}

Semantic roles & 50–950 ramp

primary

#123A5E

secondary

#966335

accent

#8F3DEB

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123A5E

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

Preview Lab → · Contrast checker → · Palette generator →