#123F58#123F58

#123F58 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.0% C 0.065 H 237.4°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#123F58
RGB	rgb(18, 63, 88)
HSL	hsl(201, 66%, 21%)
HSV	hsv(201, 80%, 35%)
CMYK	cmyk(79.5%, 28.4%, 0%, 65.5%)
CIE-LAB	lab(24.91, -5.57, -19.32)
CIE-LCH	lch(24.91, 20.11, 253.92°)
OKLab	oklab(35.01% -0.0349 -0.0545)
OKLCH	oklch(35.01% 0.065 237.4)
XYZ	xyz(3.7877, 4.3878, 9.8779)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F58 #582B12

analogous

#12584E #123F58 #121C58

triadic

#123F58 #58123F #3F5812

tetradic

#123F58 #4E1258 #582B12 #1C5812

square

#123F58 #4E1258 #582B12 #1C5812

split-complementary

#123F58 #58121C #584E12

monochromatic

#051219 #081B25 #123F58 #1C638B #2788BE

Accessibility & contrast

On white

11.18

#123F58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#123F58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F58

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F58	#FFFFFF	#000000	##FFFFFF
##123F58	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333F59

Deuteranopia (green-blind)

#2A3858

Tritanopia (blue-blind)

#004548

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #123f58;
/* rgb */ color: rgb(18, 63, 88);
/* oklch */ color: oklch(35.0% 0.065 237.4);

Tailwind

colors: {
  custom: {
    50: '#5b7387',
    500: '#123f58',
    950: '#000000',
  },
}

SCSS

$custom: #123f58;
$custom-light: #5b7387;
$custom-dark: #000000;

JSON

{
  "hex": "#123f58",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 88
  },
  "hsl": {
    "h": 201.429,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.3501,
    "c": 0.06471,
    "h": 237.4
  },
  "luminance": 0.04388
}

Semantic roles & 50–950 ramp

primary

#123F58

secondary

#915635

accent

#7C3FE9

background

#F5F7F8

surface

#E9EDEF

border

#C5C8CA

text

#04080B

muted

#797B7C

Preview Lab

Preview with #123F58

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

Preview Lab → · Contrast checker → · Palette generator →