#1F63B3#1F63B3

#1F63B3 is a mid, vivid cyan. Relative luminance 0.125; OKLCH L 50.2% C 0.143 H 255.3°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F63B3
RGB	rgb(31, 99, 179)
HSL	hsl(212, 70%, 41%)
HSV	hsv(212, 83%, 70%)
CMYK	cmyk(82.7%, 44.7%, 0%, 29.8%)
CIE-LAB	lab(41.95, 8.89, -48.34)
CIE-LCH	lch(41.95, 49.15, 280.41°)
OKLab	oklab(50.19% -0.0364 -0.1387)
OKLCH	oklch(50.19% 0.143 255.3)
XYZ	xyz(13.1606, 12.4680, 44.3520)
Luminance	0.1247 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F63B3 #B36F1F

analogous

#1FADB3 #1F63B3 #251FB3

triadic

#1F63B3 #B31F63 #63B31F

tetradic

#1F63B3 #B31FAD #B36F1F #1FB325

square

#1F63B3 #B31FAD #B36F1F #1FB325

split-complementary

#1F63B3 #B3251F #ADB31F

monochromatic

#0D294B #16467F #1F63B3 #3381DC #68A1E5

Accessibility & contrast

On white

6.01

#1F63B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#1F63B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F63B3

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F63B3	#FFFFFF	#000000	##FFFFFF
##1F63B3	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396AB6

Deuteranopia (green-blind)

#195DB1

Tritanopia (blue-blind)

#007682

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #1f63b3;
/* rgb */ color: rgb(31, 99, 179);
/* oklch */ color: oklch(50.2% 0.143 255.3);

Tailwind

colors: {
  custom: {
    50: '#748eca',
    500: '#1f63b3',
    950: '#000000',
  },
}

SCSS

$custom: #1f63b3;
$custom-light: #748eca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f63b3",
  "rgb": {
    "r": 31,
    "g": 99,
    "b": 179
  },
  "hsl": {
    "h": 212.432,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50187,
    "c": 0.14339,
    "h": 255.3
  },
  "luminance": 0.1247
}

Semantic roles & 50–950 ramp

primary

#1F63B3

secondary

#CA9B64

accent

#9B3BED

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #1F63B3

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

Preview Lab → · Contrast checker → · Palette generator →