#123A5F#123A5F

#123A5F is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.1% C 0.079 H 249.9°. Best body text is #FFFFFF at 11.69:1 contrast (WCAG AA passes).

Color values

HEX	#123A5F
RGB	rgb(18, 58, 95)
HSL	hsl(209, 68%, 22%)
HSV	hsv(209, 81%, 37%)
CMYK	cmyk(81.1%, 38.9%, 0%, 62.7%)
CIE-LAB	lab(23.61, 0.66, -25.95)
CIE-LCH	lch(23.61, 25.96, 271.45°)
OKLab	oklab(34.11% -0.0271 -0.0739)
OKLCH	oklch(34.11% 0.079 249.9)
XYZ	xyz(3.8273, 3.9805, 11.3909)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123A5F #5F3712

analogous

#125F5E #123A5F #12145F

triadic

#123A5F #5F123A #3A5F12

tetradic

#123A5F #5E125F #5F3712 #145F12

square

#123A5F #5E125F #5F3712 #145F12

split-complementary

#123A5F #5F1214 #5F5E12

monochromatic

#05101A #081B2C #123A5F #1C5992 #2579C6

Accessibility & contrast

On white

11.69

#123A5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#123A5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123A5F

11.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123A5F	#FFFFFF	#000000	##FFFFFF
##123A5F	1.00	11.69	1.80	11.69
#FFFFFF	11.69	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293C61

Deuteranopia (green-blind)

#1D355E

Tritanopia (blue-blind)

#004348

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123a5f;
/* rgb */ color: rgb(18, 58, 95);
/* oklch */ color: oklch(34.1% 0.079 249.9);

Tailwind

colors: {
  custom: {
    50: '#5d6f8c',
    500: '#123a5f',
    950: '#000000',
  },
}

SCSS

$custom: #123a5f;
$custom-light: #5d6f8c;
$custom-dark: #000000;

JSON

{
  "hex": "#123a5f",
  "rgb": {
    "r": 18,
    "g": 58,
    "b": 95
  },
  "hsl": {
    "h": 208.831,
    "s": 68.142,
    "l": 22.157
  },
  "oklch": {
    "l": 0.34106,
    "c": 0.07869,
    "h": 249.9
  },
  "luminance": 0.03981
}

Semantic roles & 50–950 ramp

primary

#123A5F

secondary

#976436

accent

#913DEB

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #123A5F

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

Preview Lab → · Contrast checker → · Palette generator →