#1F5DC2#1F5DC2

#1F5DC2 is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.0% C 0.171 H 260.0°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F5DC2
RGB	rgb(31, 93, 194)
HSL	hsl(217, 72%, 44%)
HSV	hsv(217, 84%, 76%)
CMYK	cmyk(84%, 52.1%, 0%, 23.9%)
CIE-LAB	lab(41.24, 18.68, -58.24)
CIE-LCH	lch(41.24, 61.17, 287.78°)
OKLab	oklab(49.96% -0.0296 -0.1679)
OKLCH	oklch(49.96% 0.171 260)
XYZ	xyz(14.2135, 12.0133, 52.5981)
Luminance	0.1202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5DC2 #C2841F

analogous

#1FAFC2 #1F5DC2 #331FC2

triadic

#1F5DC2 #C21F5D #5DC21F

tetradic

#1F5DC2 #C21FAF #C2841F #1FC233

square

#1F5DC2 #C21FAF #C2841F #1FC233

split-complementary

#1F5DC2 #C2331F #AFC21F

monochromatic

#0E2A58 #17448D #1F5DC2 #3E7CE0 #73A0E9

Accessibility & contrast

On white

6.17

#1F5DC2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#1F5DC2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5DC2

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5DC2	#FFFFFF	#000000	##FFFFFF
##1F5DC2	1.00	6.17	3.40	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1469C6

Deuteranopia (green-blind)

#005AC0

Tritanopia (blue-blind)

#007686

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #1f5dc2;
/* rgb */ color: rgb(31, 93, 194);
/* oklch */ color: oklch(50.0% 0.171 260.0);

Tailwind

colors: {
  custom: {
    50: '#788ad5',
    500: '#1f5dc2',
    950: '#000000',
  },
}

SCSS

$custom: #1f5dc2;
$custom-light: #788ad5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5dc2",
  "rgb": {
    "r": 31,
    "g": 93,
    "b": 194
  },
  "hsl": {
    "h": 217.178,
    "s": 72.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.49959,
    "c": 0.17053,
    "h": 260
  },
  "luminance": 0.12015
}

Semantic roles & 50–950 ramp

primary

#1F5DC2

secondary

#CFAA6D

accent

#AA39EF

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #1F5DC2

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

Preview Lab → · Contrast checker → · Palette generator →