#1F839B#1F839B

#1F839B is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 56.6% C 0.094 H 218.4°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#1F839B
RGB	rgb(31, 131, 155)
HSL	hsl(192, 67%, 36%)
HSV	hsv(192, 80%, 61%)
CMYK	cmyk(80%, 15.5%, 0%, 39.2%)
CIE-LAB	lab(50.56, -19.13, -20.77)
CIE-LCH	lch(50.56, 28.24, 227.35°)
OKLab	oklab(56.61% -0.0733 -0.0581)
OKLCH	oklch(56.61% 0.094 218.4)
XYZ	xyz(14.5953, 18.8887, 33.8806)
Luminance	0.1889 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F839B #9B371F

analogous

#1F9B75 #1F839B #1F459B

triadic

#1F839B #9B1F83 #839B1F

tetradic

#1F839B #751F9B #9B371F #459B1F

square

#1F839B #751F9B #9B371F #459B1F

split-complementary

#1F839B #9B1F45 #9B751F

monochromatic

#0B2D35 #155868 #1F839B #29AECE #57C3DD

Accessibility & contrast

On white

4.40

#1F839B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#1F839B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F839B

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F839B	#FFFFFF	#000000	##000000
##1F839B	1.00	4.40	4.78	4.78
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#747F9C

Deuteranopia (green-blind)

#63739B

Tritanopia (blue-blind)

#008B8B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #1f839b;
/* rgb */ color: rgb(31, 131, 155);
/* oklch */ color: oklch(56.6% 0.094 218.4);

Tailwind

colors: {
  custom: {
    50: '#71a7b8',
    500: '#1f839b',
    950: '#000000',
  },
}

SCSS

$custom: #1f839b;
$custom-light: #71a7b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f839b",
  "rgb": {
    "r": 31,
    "g": 131,
    "b": 155
  },
  "hsl": {
    "h": 191.613,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.56605,
    "c": 0.09357,
    "h": 218.4
  },
  "luminance": 0.1889
}

Semantic roles & 50–950 ramp

primary

#1F839B

secondary

#C16A55

accent

#5F3EEA

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #1F839B

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

Preview Lab → · Contrast checker → · Palette generator →