#1F5FD2#1F5FD2

#1F5FD2 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.6% C 0.189 H 261.1°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#1F5FD2
RGB	rgb(31, 95, 210)
HSL	hsl(219, 74%, 47%)
HSV	hsv(219, 85%, 82%)
CMYK	cmyk(85.2%, 54.8%, 0%, 17.6%)
CIE-LAB	lab(42.95, 23.60, -64.69)
CIE-LCH	lch(42.95, 68.86, 290.04°)
OKLab	oklab(51.63% -0.0292 -0.1869)
OKLCH	oklch(51.63% 0.189 261.1)
XYZ	xyz(16.2859, 13.1268, 62.6356)
Luminance	0.1313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5FD2 #D2921F

analogous

#1FB9D2 #1F5FD2 #381FD2

triadic

#1F5FD2 #D21F5F #5FD21F

tetradic

#1F5FD2 #D21FB9 #D2921F #1FD238

square

#1F5FD2 #D21FB9 #D2921F #1FD238

split-complementary

#1F5FD2 #D2381F #B9D21F

monochromatic

#0F2F67 #17479D #1F5FD2 #4A81E4 #7FA6EC

Accessibility & contrast

On white

5.79

#1F5FD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#1F5FD2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5FD2

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5FD2	#FFFFFF	#000000	##FFFFFF
##1F5FD2	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED6

Deuteranopia (green-blind)

#005ED0

Tritanopia (blue-blind)

#007C8F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #1f5fd2;
/* rgb */ color: rgb(31, 95, 210);
/* oklch */ color: oklch(51.6% 0.189 261.1);

Tailwind

colors: {
  custom: {
    50: '#7c8be1',
    500: '#1f5fd2',
    950: '#000000',
  },
}

SCSS

$custom: #1f5fd2;
$custom-light: #7c8be1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5fd2",
  "rgb": {
    "r": 31,
    "g": 95,
    "b": 210
  },
  "hsl": {
    "h": 218.547,
    "s": 74.274,
    "l": 47.255
  },
  "oklch": {
    "l": 0.51633,
    "c": 0.18913,
    "h": 261.1
  },
  "luminance": 0.13129
}

Semantic roles & 50–950 ramp

primary

#1F5FD2

secondary

#D4B478

accent

#AE37F1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0B0B15

muted

#7C7C83

Preview Lab

Preview with #1F5FD2

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

Preview Lab → · Contrast checker → · Palette generator →