#1F4CB2#1F4CB2

#1F4CB2 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.1% C 0.170 H 263.3°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F4CB2
RGB	rgb(31, 76, 178)
HSL	hsl(222, 70%, 41%)
HSV	hsv(222, 83%, 70%)
CMYK	cmyk(82.6%, 57.3%, 0%, 30.2%)
CIE-LAB	lab(35.35, 23.68, -58.43)
CIE-LCH	lch(35.35, 63.04, 292.06°)
OKLab	oklab(45.11% -0.02 -0.1688)
OKLCH	oklch(45.11% 0.17 263.3)
XYZ	xyz(11.1825, 8.6732, 43.1956)
Luminance	0.0867 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4CB2 #B2851F

analogous

#1F95B2 #1F4CB2 #3C1FB2

triadic

#1F4CB2 #B21F4C #4CB21F

tetradic

#1F4CB2 #B21F95 #B2851F #1FB23C

square

#1F4CB2 #B21F95 #B2851F #1FB23C

split-complementary

#1F4CB2 #B23C1F #95B21F

monochromatic

#0D1F4A #16367E #1F4CB2 #3366DB #678DE5

Accessibility & contrast

On white

7.68

#1F4CB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#1F4CB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4CB2

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4CB2	#FFFFFF	#000000	##FFFFFF
##1F4CB2	1.00	7.68	2.73	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB5

Deuteranopia (green-blind)

#004DB0

Tritanopia (blue-blind)

#006677

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f4cb2;
/* rgb */ color: rgb(31, 76, 178);
/* oklch */ color: oklch(45.1% 0.170 263.3);

Tailwind

colors: {
  custom: {
    50: '#757dca',
    500: '#1f4cb2',
    950: '#000000',
  },
}

SCSS

$custom: #1f4cb2;
$custom-light: #757dca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4cb2",
  "rgb": {
    "r": 31,
    "g": 76,
    "b": 178
  },
  "hsl": {
    "h": 221.633,
    "s": 70.335,
    "l": 40.98
  },
  "oklch": {
    "l": 0.45114,
    "c": 0.17,
    "h": 263.3
  },
  "luminance": 0.08675
}

Semantic roles & 50–950 ramp

primary

#1F4CB2

secondary

#CAAA63

accent

#B63BED

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1F4CB2

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

Preview Lab → · Contrast checker → · Palette generator →