#1F66AA#1F66AA

#1F66AA is a mid, vivid cyan. Relative luminance 0.127; OKLCH L 50.3% C 0.128 H 251.4°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#1F66AA
RGB	rgb(31, 102, 170)
HSL	hsl(209, 69%, 39%)
HSV	hsv(209, 82%, 67%)
CMYK	cmyk(81.8%, 40%, 0%, 33.3%)
CIE-LAB	lab(42.30, 3.45, -42.50)
CIE-LCH	lch(42.30, 42.64, 274.64°)
OKLab	oklab(50.28% -0.0409 -0.1214)
OKLCH	oklch(50.28% 0.128 251.4)
XYZ	xyz(12.5694, 12.6948, 39.8103)
Luminance	0.1270 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F66AA #AA631F

analogous

#1FAAA9 #1F66AA #1F20AA

triadic

#1F66AA #AA1F66 #66AA1F

tetradic

#1F66AA #A91FAA #AA631F #20AA1F

square

#1F66AA #A91FAA #AA631F #20AA1F

split-complementary

#1F66AA #AA1F20 #AAA91F

monochromatic

#0C2842 #164776 #1F66AA #2D85D9 #61A3E2

Accessibility & contrast

On white

5.93

#1F66AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#1F66AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F66AA

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F66AA	#FFFFFF	#000000	##FFFFFF
##1F66AA	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456BAD

Deuteranopia (green-blind)

#2E5EA9

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1f66aa;
/* rgb */ color: rgb(31, 102, 170);
/* oklch */ color: oklch(50.3% 0.128 251.4);

Tailwind

colors: {
  custom: {
    50: '#7291c4',
    500: '#1f66aa',
    950: '#000000',
  },
}

SCSS

$custom: #1f66aa;
$custom-light: #7291c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f66aa",
  "rgb": {
    "r": 31,
    "g": 102,
    "b": 170
  },
  "hsl": {
    "h": 209.353,
    "s": 69.154,
    "l": 39.412
  },
  "oklch": {
    "l": 0.50283,
    "c": 0.12816,
    "h": 251.4
  },
  "luminance": 0.12696
}

Semantic roles & 50–950 ramp

primary

#1F66AA

secondary

#C7915E

accent

#923CEC

background

#F7F8FC

surface

#EDF0F8

border

#C8CBD1

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #1F66AA

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

Preview Lab → · Contrast checker → · Palette generator →