#1F66A8#1F66A8

#1F66A8 is a mid, vivid cyan. Relative luminance 0.126; OKLCH L 50.2% C 0.126 H 250.7°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F66A8
RGB	rgb(31, 102, 168)
HSL	hsl(209, 69%, 39%)
HSV	hsv(209, 82%, 66%)
CMYK	cmyk(81.5%, 39.3%, 0%, 34.1%)
CIE-LAB	lab(42.18, 2.67, -41.50)
CIE-LCH	lch(42.18, 41.59, 273.68°)
OKLab	oklab(50.16% -0.0414 -0.1185)
OKLCH	oklch(50.16% 0.126 250.7)
XYZ	xyz(12.3816, 12.6197, 38.8215)
Luminance	0.1262 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F66A8 #A8611F

analogous

#1FA8A6 #1F66A8 #1F22A8

triadic

#1F66A8 #A81F66 #66A81F

tetradic

#1F66A8 #A61FA8 #A8611F #22A81F

square

#1F66A8 #A61FA8 #A8611F #22A81F

split-complementary

#1F66A8 #A81F22 #A8A61F

monochromatic

#0C2741 #154774 #1F66A8 #2C85D8 #60A3E2

Accessibility & contrast

On white

5.96

#1F66A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#1F66A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F66A8

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F66A8	#FFFFFF	#000000	##FFFFFF
##1F66A8	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#466AAB

Deuteranopia (green-blind)

#305EA7

Tritanopia (blue-blind)

#00767F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1f66a8;
/* rgb */ color: rgb(31, 102, 168);
/* oklch */ color: oklch(50.2% 0.126 250.7);

Tailwind

colors: {
  custom: {
    50: '#7191c2',
    500: '#1f66a8',
    950: '#000000',
  },
}

SCSS

$custom: #1f66a8;
$custom-light: #7191c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f66a8",
  "rgb": {
    "r": 31,
    "g": 102,
    "b": 168
  },
  "hsl": {
    "h": 208.905,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.50156,
    "c": 0.12556,
    "h": 250.7
  },
  "luminance": 0.12621
}

Semantic roles & 50–950 ramp

primary

#1F66A8

secondary

#C68F5D

accent

#913CEC

background

#F7F8FC

surface

#EDF0F8

border

#C8CBD1

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #1F66A8

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

Preview Lab → · Contrast checker → · Palette generator →