#123957#123957

#123957 is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.3% C 0.069 H 245.4°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#123957
RGB	rgb(18, 57, 87)
HSL	hsl(206, 66%, 21%)
HSV	hsv(206, 79%, 34%)
CMYK	cmyk(79.3%, 34.5%, 0%, 65.9%)
CIE-LAB	lab(22.80, -1.98, -21.98)
CIE-LCH	lch(22.80, 22.07, 264.85°)
OKLab	oklab(33.32% -0.0285 -0.0623)
OKLCH	oklch(33.32% 0.069 245.4)
XYZ	xyz(3.4322, 3.7426, 9.5565)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123957 #573012

analogous

#125752 #123957 #121657

triadic

#123957 #571239 #395712

tetradic

#123957 #521257 #573012 #165712

square

#123957 #521257 #573012 #165712

split-complementary

#123957 #571216 #575212

monochromatic

#051119 #081824 #123957 #1C5A8A #277BBC

Accessibility & contrast

On white

12.01

#123957 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#123957 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123957

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123957	#FFFFFF	#000000	##FFFFFF
##123957	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3A58

Deuteranopia (green-blind)

#223456

Tritanopia (blue-blind)

#004044

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #123957;
/* rgb */ color: rgb(18, 57, 87);
/* oklch */ color: oklch(33.3% 0.069 245.4);

Tailwind

colors: {
  custom: {
    50: '#5b6f86',
    500: '#123957',
    950: '#000000',
  },
}

SCSS

$custom: #123957;
$custom-light: #5b6f86;
$custom-dark: #000000;

JSON

{
  "hex": "#123957",
  "rgb": {
    "r": 18,
    "g": 57,
    "b": 87
  },
  "hsl": {
    "h": 206.087,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.33319,
    "c": 0.06853,
    "h": 245.4
  },
  "luminance": 0.03743
}

Semantic roles & 50–950 ramp

primary

#123957

secondary

#905C35

accent

#893FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123957

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

Preview Lab → · Contrast checker → · Palette generator →