#1F55C2#1F55C2

#1F55C2 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.3% C 0.180 H 262.2°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#1F55C2
RGB	rgb(31, 85, 194)
HSL	hsl(220, 72%, 44%)
HSV	hsv(220, 84%, 76%)
CMYK	cmyk(84%, 56.2%, 0%, 23.9%)
CIE-LAB	lab(39.04, 23.95, -61.81)
CIE-LCH	lch(39.04, 66.29, 291.18°)
OKLab	oklab(48.29% -0.0244 -0.1786)
OKLCH	oklch(48.29% 0.18 262.2)
XYZ	xyz(13.5477, 10.6817, 52.3762)
Luminance	0.1068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F55C2 #C28C1F

analogous

#1FA7C2 #1F55C2 #3B1FC2

triadic

#1F55C2 #C21F55 #55C21F

tetradic

#1F55C2 #C21FA7 #C28C1F #1FC23B

square

#1F55C2 #C21FA7 #C28C1F #1FC23B

split-complementary

#1F55C2 #C23B1F #A7C21F

monochromatic

#0E2758 #173E8D #1F55C2 #3E74E0 #739AE9

Accessibility & contrast

On white

6.70

#1F55C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#1F55C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F55C2

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F55C2	#FFFFFF	#000000	##FFFFFF
##1F55C2	1.00	6.70	3.14	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C6

Deuteranopia (green-blind)

#0055C0

Tritanopia (blue-blind)

#007083

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1f55c2;
/* rgb */ color: rgb(31, 85, 194);
/* oklch */ color: oklch(48.3% 0.180 262.2);

Tailwind

colors: {
  custom: {
    50: '#7884d5',
    500: '#1f55c2',
    950: '#000000',
  },
}

SCSS

$custom: #1f55c2;
$custom-light: #7884d5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f55c2",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 194
  },
  "hsl": {
    "h": 220.123,
    "s": 72.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.4829,
    "c": 0.18027,
    "h": 262.2
  },
  "luminance": 0.10683
}

Semantic roles & 50–950 ramp

primary

#1F55C2

secondary

#CFAF6D

accent

#B339EF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #1F55C2

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

Preview Lab → · Contrast checker → · Palette generator →