#123657#123657

#123657 is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.5% C 0.072 H 249.4°. Best body text is #FFFFFF at 12.42:1 contrast (WCAG AA passes).

Color values

HEX	#123657
RGB	rgb(18, 54, 87)
HSL	hsl(209, 66%, 21%)
HSV	hsv(209, 79%, 34%)
CMYK	cmyk(79.3%, 37.9%, 0%, 65.9%)
CIE-LAB	lab(21.78, 0.08, -23.59)
CIE-LCH	lch(21.78, 23.59, 270.19°)
OKLab	oklab(32.52% -0.0253 -0.0671)
OKLCH	oklch(32.52% 0.072 249.4)
XYZ	xyz(3.2883, 3.4547, 9.5085)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123657 #573312

analogous

#125755 #123657 #121357

triadic

#123657 #571236 #365712

tetradic

#123657 #551257 #573312 #135712

square

#123657 #551257 #573312 #135712

split-complementary

#123657 #571213 #575512

monochromatic

#051019 #081724 #123657 #1C558A #2775BC

Accessibility & contrast

On white

12.42

#123657 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#123657 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123657

12.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123657	#FFFFFF	#000000	##FFFFFF
##123657	1.00	12.42	1.69	12.42
#FFFFFF	12.42	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273858

Deuteranopia (green-blind)

#1D3156

Tritanopia (blue-blind)

#003E42

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #123657;
/* rgb */ color: rgb(18, 54, 87);
/* oklch */ color: oklch(32.5% 0.072 249.4);

Tailwind

colors: {
  custom: {
    50: '#5b6c86',
    500: '#123657',
    950: '#000000',
  },
}

SCSS

$custom: #123657;
$custom-light: #5b6c86;
$custom-dark: #000000;

JSON

{
  "hex": "#123657",
  "rgb": {
    "r": 18,
    "g": 54,
    "b": 87
  },
  "hsl": {
    "h": 208.696,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.32515,
    "c": 0.07166,
    "h": 249.4
  },
  "luminance": 0.03455
}

Semantic roles & 50–950 ramp

primary

#123657

secondary

#906035

accent

#903FE9

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123657

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

Preview Lab → · Contrast checker → · Palette generator →