#1F72B3#1F72B3

#1F72B3 is a mid, vivid cyan. Relative luminance 0.156; OKLCH L 53.7% C 0.127 H 247.4°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#1F72B3
RGB	rgb(31, 114, 179)
HSL	hsl(206, 70%, 41%)
HSV	hsv(206, 83%, 70%)
CMYK	cmyk(82.7%, 36.3%, 0%, 29.8%)
CIE-LAB	lab(46.42, -0.55, -41.22)
CIE-LCH	lch(46.42, 41.22, 269.23°)
OKLab	oklab(53.68% -0.049 -0.1175)
OKLCH	oklch(53.68% 0.127 247.4)
XYZ	xyz(14.7159, 15.5788, 44.8705)
Luminance	0.1558 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F72B3 #B3601F

analogous

#1FB3AA #1F72B3 #1F28B3

triadic

#1F72B3 #B31F72 #72B31F

tetradic

#1F72B3 #AA1FB3 #B3601F #28B31F

square

#1F72B3 #AA1FB3 #B3601F #28B31F

split-complementary

#1F72B3 #B31F28 #B3AA1F

monochromatic

#0D304B #16517F #1F72B3 #3392DC #68AEE5

Accessibility & contrast

On white

5.10

#1F72B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#1F72B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F72B3

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F72B3	#FFFFFF	#000000	##FFFFFF
##1F72B3	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5375B6

Deuteranopia (green-blind)

#3D68B2

Tritanopia (blue-blind)

#00828A

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #1f72b3;
/* rgb */ color: rgb(31, 114, 179);
/* oklch */ color: oklch(53.7% 0.127 247.4);

Tailwind

colors: {
  custom: {
    50: '#749aca',
    500: '#1f72b3',
    950: '#000000',
  },
}

SCSS

$custom: #1f72b3;
$custom-light: #749aca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f72b3",
  "rgb": {
    "r": 31,
    "g": 114,
    "b": 179
  },
  "hsl": {
    "h": 206.351,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.53676,
    "c": 0.12728,
    "h": 247.4
  },
  "luminance": 0.15581
}

Semantic roles & 50–950 ramp

primary

#1F72B3

secondary

#CA9164

accent

#893BED

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #1F72B3

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

Preview Lab → · Contrast checker → · Palette generator →