#1F819F#1F819F

#1F819F is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.3% C 0.097 H 223.8°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#1F819F
RGB	rgb(31, 129, 159)
HSL	hsl(194, 67%, 37%)
HSV	hsv(194, 81%, 62%)
CMYK	cmyk(80.5%, 18.9%, 0%, 37.6%)
CIE-LAB	lab(50.09, -16.66, -23.82)
CIE-LCH	lch(50.09, 29.07, 235.04°)
OKLab	oklab(56.28% -0.0698 -0.0668)
OKLCH	oklch(56.28% 0.097 223.8)
XYZ	xyz(14.6707, 18.4932, 35.5905)
Luminance	0.1850 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F819F #9F3D1F

analogous

#1F9F7D #1F819F #1F419F

triadic

#1F819F #9F1F81 #819F1F

tetradic

#1F819F #7D1F9F #9F3D1F #419F1F

square

#1F819F #7D1F9F #9F3D1F #419F1F

split-complementary

#1F819F #9F1F41 #9F7D1F

monochromatic

#0B2E39 #15576C #1F819F #29ABD2 #5AC0DF

Accessibility & contrast

On white

4.47

#1F819F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#1F819F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F819F

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F819F	#FFFFFF	#000000	##000000
##1F819F	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#707EA1

Deuteranopia (green-blind)

#5F729F

Tritanopia (blue-blind)

#008A8B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #1f819f;
/* rgb */ color: rgb(31, 129, 159);
/* oklch */ color: oklch(56.3% 0.097 223.8);

Tailwind

colors: {
  custom: {
    50: '#71a5bb',
    500: '#1f819f',
    950: '#000000',
  },
}

SCSS

$custom: #1f819f;
$custom-light: #71a5bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f819f",
  "rgb": {
    "r": 31,
    "g": 129,
    "b": 159
  },
  "hsl": {
    "h": 194.063,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.56283,
    "c": 0.09659,
    "h": 223.8
  },
  "luminance": 0.18495
}

Semantic roles & 50–950 ramp

primary

#1F819F

secondary

#C37057

accent

#663EEA

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #1F819F

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

Preview Lab → · Contrast checker → · Palette generator →