#1F64B3#1F64B3

#1F64B3 is a mid, vivid cyan. Relative luminance 0.127; OKLCH L 50.4% C 0.142 H 254.8°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#1F64B3
RGB	rgb(31, 100, 179)
HSL	hsl(212, 70%, 41%)
HSV	hsv(212, 83%, 70%)
CMYK	cmyk(82.7%, 44.1%, 0%, 29.8%)
CIE-LAB	lab(42.24, 8.24, -47.87)
CIE-LCH	lch(42.24, 48.57, 279.77°)
OKLab	oklab(50.42% -0.0372 -0.1373)
OKLCH	oklch(50.42% 0.142 254.8)
XYZ	xyz(13.2559, 12.6587, 44.3838)
Luminance	0.1266 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F64B3 #B36E1F

analogous

#1FAEB3 #1F64B3 #241FB3

triadic

#1F64B3 #B31F64 #64B31F

tetradic

#1F64B3 #B31FAE #B36E1F #1FB324

square

#1F64B3 #B31FAE #B36E1F #1FB324

split-complementary

#1F64B3 #B3241F #AEB31F

monochromatic

#0D2A4B #16477F #1F64B3 #3382DC #68A2E5

Accessibility & contrast

On white

5.95

#1F64B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#1F64B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F64B3

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F64B3	#FFFFFF	#000000	##FFFFFF
##1F64B3	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6BB6

Deuteranopia (green-blind)

#1D5EB1

Tritanopia (blue-blind)

#007783

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1f64b3;
/* rgb */ color: rgb(31, 100, 179);
/* oklch */ color: oklch(50.4% 0.142 254.8);

Tailwind

colors: {
  custom: {
    50: '#748fca',
    500: '#1f64b3',
    950: '#000000',
  },
}

SCSS

$custom: #1f64b3;
$custom-light: #748fca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f64b3",
  "rgb": {
    "r": 31,
    "g": 100,
    "b": 179
  },
  "hsl": {
    "h": 212.027,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50415,
    "c": 0.14224,
    "h": 254.8
  },
  "luminance": 0.1266
}

Semantic roles & 50–950 ramp

primary

#1F64B3

secondary

#CA9A64

accent

#9A3BED

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #1F64B3

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

Preview Lab → · Contrast checker → · Palette generator →