#123757#123757

#123757 is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.8% C 0.071 H 248.1°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#123757
RGB	rgb(18, 55, 87)
HSL	hsl(208, 66%, 21%)
HSV	hsv(208, 79%, 34%)
CMYK	cmyk(79.3%, 36.8%, 0%, 65.9%)
CIE-LAB	lab(22.12, -0.61, -23.06)
CIE-LCH	lch(22.12, 23.07, 268.48°)
OKLab	oklab(32.78% -0.0263 -0.0655)
OKLCH	oklch(32.78% 0.071 248.1)
XYZ	xyz(3.3353, 3.5487, 9.5242)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123757 #573212

analogous

#125754 #123757 #121557

triadic

#123757 #571237 #375712

tetradic

#123757 #541257 #573212 #155712

square

#123757 #541257 #573212 #155712

split-complementary

#123757 #571215 #575412

monochromatic

#051019 #081724 #123757 #1C578A #2777BC

Accessibility & contrast

On white

12.28

#123757 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#123757 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123757

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123757	#FFFFFF	#000000	##FFFFFF
##123757	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283858

Deuteranopia (green-blind)

#1F3256

Tritanopia (blue-blind)

#003F43

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #123757;
/* rgb */ color: rgb(18, 55, 87);
/* oklch */ color: oklch(32.8% 0.071 248.1);

Tailwind

colors: {
  custom: {
    50: '#5b6d86',
    500: '#123757',
    950: '#000000',
  },
}

SCSS

$custom: #123757;
$custom-light: #5b6d86;
$custom-dark: #000000;

JSON

{
  "hex": "#123757",
  "rgb": {
    "r": 18,
    "g": 55,
    "b": 87
  },
  "hsl": {
    "h": 207.826,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.32782,
    "c": 0.07057,
    "h": 248.1
  },
  "luminance": 0.03549
}

Semantic roles & 50–950 ramp

primary

#123757

secondary

#905F35

accent

#8E3FE9

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123757

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

Preview Lab → · Contrast checker → · Palette generator →