#123F59#123F59

#123F59 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.1% C 0.066 H 238.4°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#123F59
RGB	rgb(18, 63, 89)
HSL	hsl(202, 66%, 21%)
HSV	hsv(202, 80%, 35%)
CMYK	cmyk(79.8%, 29.2%, 0%, 65.1%)
CIE-LAB	lab(24.97, -5.17, -19.90)
CIE-LCH	lch(24.97, 20.56, 255.44°)
OKLab	oklab(35.07% -0.0345 -0.0562)
OKLCH	oklch(35.07% 0.066 238.4)
XYZ	xyz(3.8294, 4.4044, 10.0976)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F59 #592C12

analogous

#12594F #123F59 #121B59

triadic

#123F59 #59123F #3F5912

tetradic

#123F59 #4F1259 #592C12 #1B5912

square

#123F59 #4F1259 #592C12 #1B5912

split-complementary

#123F59 #59121B #594F12

monochromatic

#051219 #081B26 #123F59 #1C638C #2787BF

Accessibility & contrast

On white

11.16

#123F59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#123F59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F59

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F59	#FFFFFF	#000000	##FFFFFF
##123F59	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333F5A

Deuteranopia (green-blind)

#293859

Tritanopia (blue-blind)

#004648

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #123f59;
/* rgb */ color: rgb(18, 63, 89);
/* oklch */ color: oklch(35.1% 0.066 238.4);

Tailwind

colors: {
  custom: {
    50: '#5b7388',
    500: '#123f59',
    950: '#000000',
  },
}

SCSS

$custom: #123f59;
$custom-light: #5b7388;
$custom-dark: #000000;

JSON

{
  "hex": "#123f59",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 89
  },
  "hsl": {
    "h": 201.972,
    "s": 66.355,
    "l": 20.98
  },
  "oklch": {
    "l": 0.35068,
    "c": 0.06591,
    "h": 238.4
  },
  "luminance": 0.04405
}

Semantic roles & 50–950 ramp

primary

#123F59

secondary

#925735

accent

#7D3FE9

background

#F5F7F8

surface

#E9EDEF

border

#C5C8CA

text

#04080B

muted

#797B7C

Preview Lab

Preview with #123F59

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

Preview Lab → · Contrast checker → · Palette generator →