#1F73A8#1F73A8

#1F73A8 is a mid, moderate cyan. Relative luminance 0.154; OKLCH L 53.3% C 0.113 H 242.0°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F73A8
RGB	rgb(31, 115, 168)
HSL	hsl(203, 69%, 39%)
HSV	hsv(203, 82%, 66%)
CMYK	cmyk(81.5%, 31.5%, 0%, 34.1%)
CIE-LAB	lab(46.15, -5.33, -35.22)
CIE-LCH	lch(46.15, 35.63, 261.39°)
OKLab	oklab(53.28% -0.0531 -0.0999)
OKLCH	oklch(53.28% 0.113 242)
XYZ	xyz(13.7609, 15.3782, 39.2812)
Luminance	0.1538 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F73A8 #A8541F

analogous

#1FA899 #1F73A8 #1F2EA8

triadic

#1F73A8 #A81F73 #73A81F

tetradic

#1F73A8 #991FA8 #A8541F #2EA81F

square

#1F73A8 #991FA8 #A8541F #2EA81F

split-complementary

#1F73A8 #A81F2E #A8991F

monochromatic

#0C2C41 #155074 #1F73A8 #2C96D8 #60AFE2

Accessibility & contrast

On white

5.15

#1F73A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#1F73A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F73A8

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F73A8	#FFFFFF	#000000	##FFFFFF
##1F73A8	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A74AA

Deuteranopia (green-blind)

#4768A7

Tritanopia (blue-blind)

#008086

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #1f73a8;
/* rgb */ color: rgb(31, 115, 168);
/* oklch */ color: oklch(53.3% 0.113 242.0);

Tailwind

colors: {
  custom: {
    50: '#729bc2',
    500: '#1f73a8',
    950: '#000000',
  },
}

SCSS

$custom: #1f73a8;
$custom-light: #729bc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f73a8",
  "rgb": {
    "r": 31,
    "g": 115,
    "b": 168
  },
  "hsl": {
    "h": 203.212,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.53276,
    "c": 0.11319,
    "h": 242
  },
  "luminance": 0.1538
}

Semantic roles & 50–950 ramp

primary

#1F73A8

secondary

#C6855D

accent

#803CEC

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #1F73A8

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

Preview Lab → · Contrast checker → · Palette generator →