#123F43#123F43

#123F43 is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.9% C 0.048 H 203.5°. Best body text is #FFFFFF at 11.55:1 contrast (WCAG AA passes).

Color values

HEX	#123F43
RGB	rgb(18, 63, 67)
HSL	hsl(185, 58%, 17%)
HSV	hsv(185, 73%, 26%)
CMYK	cmyk(73.1%, 6%, 0%, 73.7%)
CIE-LAB	lab(23.96, -13.54, -6.95)
CIE-LCH	lch(23.96, 15.22, 207.15°)
OKLab	oklab(33.93% -0.0443 -0.0192)
OKLCH	oklch(33.93% 0.048 203.5)
XYZ	xyz(3.0396, 4.0885, 5.9381)
Luminance	0.0409 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F43 #431612

analogous

#12432F #123F43 #122743

triadic

#123F43 #43123F #3F4312

tetradic

#123F43 #2F1243 #431612 #274312

square

#123F43 #2F1243 #431612 #274312

split-complementary

#123F43 #431227 #432F12

monochromatic

#061718 #061718 #123F43 #1F6C73 #2C9AA3

Accessibility & contrast

On white

11.55

#123F43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#123F43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F43

11.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F43	#FFFFFF	#000000	##FFFFFF
##123F43	1.00	11.55	1.82	11.55
#FFFFFF	11.55	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3C43

Deuteranopia (green-blind)

#323743

Tritanopia (blue-blind)

#004240

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123f43;
/* rgb */ color: rgb(18, 63, 67);
/* oklch */ color: oklch(33.9% 0.048 203.5);

Tailwind

colors: {
  custom: {
    50: '#587477',
    500: '#123f43',
    950: '#000000',
  },
}

SCSS

$custom: #123f43;
$custom-light: #587477;
$custom-dark: #000000;

JSON

{
  "hex": "#123f43",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 67
  },
  "hsl": {
    "h": 184.898,
    "s": 57.647,
    "l": 16.667
  },
  "oklch": {
    "l": 0.33932,
    "c": 0.04829,
    "h": 203.5
  },
  "luminance": 0.04089
}

Semantic roles & 50–950 ramp

primary

#123F43

secondary

#7C3B35

accent

#5347E1

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040808

muted

#797B7B

Preview Lab

Preview with #123F43

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

Preview Lab → · Contrast checker → · Palette generator →