#123F3F#123F3F

#123F3F is a dark, muted teal. Relative luminance 0.040; OKLCH L 33.8% C 0.048 H 195.1°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#123F3F
RGB	rgb(18, 63, 63)
HSL	hsl(180, 56%, 16%)
HSV	hsv(180, 71%, 25%)
CMYK	cmyk(71.4%, 0%, 0%, 75.3%)
CIE-LAB	lab(23.81, -14.93, -4.51)
CIE-LCH	lch(23.81, 15.60, 196.82°)
OKLab	oklab(33.76% -0.0464 -0.0125)
OKLCH	oklch(33.76% 0.048 195.1)
XYZ	xyz(2.9238, 4.0422, 5.3278)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F3F #3F1212

analogous

#123F28 #123F3F #12283F

triadic

#123F3F #3F123F #3F3F12

tetradic

#123F3F #28123F #3F1212 #283F12

square

#123F3F #28123F #3F1212 #283F12

split-complementary

#123F3F #3F1228 #3F2812

monochromatic

#071818 #071818 #123F3F #206F6F #2D9E9E

Accessibility & contrast

On white

11.61

#123F3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#123F3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F3F

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F3F	#FFFFFF	#000000	##FFFFFF
##123F3F	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3C3F

Deuteranopia (green-blind)

#33363F

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123f3f;
/* rgb */ color: rgb(18, 63, 63);
/* oklch */ color: oklch(33.8% 0.048 195.1);

Tailwind

colors: {
  custom: {
    50: '#577474',
    500: '#123f3f',
    950: '#000000',
  },
}

SCSS

$custom: #123f3f;
$custom-light: #577474;
$custom-dark: #000000;

JSON

{
  "hex": "#123f3f",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 180,
    "s": 55.556,
    "l": 15.882
  },
  "oklch": {
    "l": 0.33759,
    "c": 0.04802,
    "h": 195.1
  },
  "luminance": 0.04042
}

Semantic roles & 50–950 ramp

primary

#123F3F

secondary

#783535

accent

#4949DF

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#030808

muted

#787B7B

Preview Lab

Preview with #123F3F

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

Preview Lab → · Contrast checker → · Palette generator →