#123457#123457

#123457 is a dark, moderate cyan. Relative luminance 0.033; OKLCH L 32.0% C 0.074 H 251.8°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#123457
RGB	rgb(18, 52, 87)
HSL	hsl(210, 66%, 21%)
HSV	hsv(210, 79%, 34%)
CMYK	cmyk(79.3%, 40.2%, 0%, 65.9%)
CIE-LAB	lab(21.10, 1.48, -24.67)
CIE-LCH	lch(21.10, 24.71, 273.42°)
OKLab	oklab(31.99% -0.0231 -0.0702)
OKLCH	oklch(31.99% 0.074 251.8)
XYZ	xyz(3.1971, 3.2723, 9.4781)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123457 #573512

analogous

#125657 #123457 #131257

triadic

#123457 #571234 #345712

tetradic

#123457 #571256 #573512 #125713

square

#123457 #571256 #573512 #125713

split-complementary

#123457 #571312 #565712

monochromatic

#050F19 #081624 #123457 #1C528A #2771BC

Accessibility & contrast

On white

12.69

#123457 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#123457 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123457

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123457	#FFFFFF	#000000	##FFFFFF
##123457	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#243658

Deuteranopia (green-blind)

#1A3056

Tritanopia (blue-blind)

#003C41

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #123457;
/* rgb */ color: rgb(18, 52, 87);
/* oklch */ color: oklch(32.0% 0.074 251.8);

Tailwind

colors: {
  custom: {
    50: '#5b6b86',
    500: '#123457',
    950: '#000000',
  },
}

SCSS

$custom: #123457;
$custom-light: #5b6b86;
$custom-dark: #000000;

JSON

{
  "hex": "#123457",
  "rgb": {
    "r": 18,
    "g": 52,
    "b": 87
  },
  "hsl": {
    "h": 210.435,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.31985,
    "c": 0.07393,
    "h": 251.8
  },
  "luminance": 0.03273
}

Semantic roles & 50–950 ramp

primary

#123457

secondary

#906335

accent

#953FE9

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #123457

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

Preview Lab → · Contrast checker → · Palette generator →