#1F859B#1F859B

#1F859B is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.1% C 0.093 H 216.3°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#1F859B
RGB	rgb(31, 133, 155)
HSL	hsl(191, 67%, 36%)
HSV	hsv(191, 80%, 61%)
CMYK	cmyk(80%, 14.2%, 0%, 39.2%)
CIE-LAB	lab(51.19, -20.21, -19.81)
CIE-LCH	lch(51.19, 28.29, 224.43°)
OKLab	oklab(57.11% -0.0753 -0.0553)
OKLCH	oklch(57.11% 0.093 216.3)
XYZ	xyz(14.8665, 19.4311, 33.9710)
Luminance	0.1943 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F859B #9B351F

analogous

#1F9B73 #1F859B #1F479B

triadic

#1F859B #9B1F85 #859B1F

tetradic

#1F859B #731F9B #9B351F #479B1F

square

#1F859B #731F9B #9B351F #479B1F

split-complementary

#1F859B #9B1F47 #9B731F

monochromatic

#0B2D35 #155968 #1F859B #29B1CE #57C6DD

Accessibility & contrast

On white

4.30

#1F859B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#1F859B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F859B

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F859B	#FFFFFF	#000000	##000000
##1F859B	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#76819C

Deuteranopia (green-blind)

#66759B

Tritanopia (blue-blind)

#008D8C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #1f859b;
/* rgb */ color: rgb(31, 133, 155);
/* oklch */ color: oklch(57.1% 0.093 216.3);

Tailwind

colors: {
  custom: {
    50: '#71a8b8',
    500: '#1f859b',
    950: '#000000',
  },
}

SCSS

$custom: #1f859b;
$custom-light: #71a8b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f859b",
  "rgb": {
    "r": 31,
    "g": 133,
    "b": 155
  },
  "hsl": {
    "h": 190.645,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.57113,
    "c": 0.09348,
    "h": 216.3
  },
  "luminance": 0.19433
}

Semantic roles & 50–950 ramp

primary

#1F859B

secondary

#C16855

accent

#5D3EEA

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #1F859B

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

Preview Lab → · Contrast checker → · Palette generator →