#123357#123357

#123357 is a dark, moderate cyan. Relative luminance 0.032; OKLCH L 31.7% C 0.075 H 253.0°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#123357
RGB	rgb(18, 51, 87)
HSL	hsl(211, 66%, 21%)
HSV	hsv(211, 79%, 34%)
CMYK	cmyk(79.3%, 41.4%, 0%, 65.9%)
CIE-LAB	lab(20.77, 2.18, -25.20)
CIE-LCH	lch(20.77, 25.30, 274.94°)
OKLab	oklab(31.72% -0.022 -0.0718)
OKLCH	oklch(31.72% 0.075 253)
XYZ	xyz(3.1529, 3.1840, 9.4634)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123357 #573612

analogous

#125557 #123357 #131257

triadic

#123357 #571233 #335712

tetradic

#123357 #571255 #573612 #125713

square

#123357 #571255 #573612 #125713

split-complementary

#123357 #571312 #555712

monochromatic

#050F19 #081524 #123357 #1C518A #276EBC

Accessibility & contrast

On white

12.83

#123357 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#123357 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123357

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123357	#FFFFFF	#000000	##FFFFFF
##123357	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#223558

Deuteranopia (green-blind)

#182F56

Tritanopia (blue-blind)

#003B40

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #123357;
/* rgb */ color: rgb(18, 51, 87);
/* oklch */ color: oklch(31.7% 0.075 253.0);

Tailwind

colors: {
  custom: {
    50: '#5b6a86',
    500: '#123357',
    950: '#000000',
  },
}

SCSS

$custom: #123357;
$custom-light: #5b6a86;
$custom-dark: #000000;

JSON

{
  "hex": "#123357",
  "rgb": {
    "r": 18,
    "g": 51,
    "b": 87
  },
  "hsl": {
    "h": 211.304,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.31722,
    "c": 0.07512,
    "h": 253
  },
  "luminance": 0.03184
}

Semantic roles & 50–950 ramp

primary

#123357

secondary

#906435

accent

#983FE9

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #123357

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

Preview Lab → · Contrast checker → · Palette generator →