#223FBC#223FBC

#223FBC is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.198 H 266.9°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#223FBC
RGB	rgb(34, 63, 188)
HSL	hsl(229, 69%, 44%)
HSV	hsv(229, 82%, 74%)
CMYK	cmyk(81.9%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(32.97, 36.29, -68.21)
CIE-LCH	lch(32.97, 77.27, 298.01°)
OKLab	oklab(43.64% -0.0106 -0.1976)
OKLCH	oklch(43.64% 0.198 266.9)
XYZ	xyz(11.5111, 7.5246, 48.4129)
Luminance	0.0753 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.10

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223FBC #BC9F22

analogous

#228CBC #223FBC #5222BC

triadic

#223FBC #BC223F #3FBC22

tetradic

#223FBC #BC228C #BC9F22 #22BC52

square

#223FBC #BC228C #BC9F22 #22BC52

split-complementary

#223FBC #BC5222 #8CBC22

monochromatic

#0F1C54 #192E88 #223FBC #3F5DDC #7388E6

Accessibility & contrast

On white

8.38

#223FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#223FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223FBC

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223FBC	#FFFFFF	#000000	##FFFFFF
##223FBC	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C0

Deuteranopia (green-blind)

#0046BA

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #223fbc;
/* rgb */ color: rgb(34, 63, 188);
/* oklch */ color: oklch(43.6% 0.198 266.9);

Tailwind

colors: {
  custom: {
    50: '#7974d1',
    500: '#223fbc',
    950: '#000000',
  },
}

SCSS

$custom: #223fbc;
$custom-light: #7974d1;
$custom-dark: #000000;

JSON

{
  "hex": "#223fbc",
  "rgb": {
    "r": 34,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 228.701,
    "s": 69.369,
    "l": 43.529
  },
  "oklch": {
    "l": 0.43644,
    "c": 0.19789,
    "h": 266.9
  },
  "luminance": 0.07526
}

Semantic roles & 50–950 ramp

primary

#223FBC

secondary

#CDBB6D

accent

#CB3CEC

background

#F8F7FD

surface

#EFEDFA

border

#CAC8D3

text

#0B0814

muted

#7C7B83

Preview Lab

Preview with #223FBC

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

Preview Lab → · Contrast checker → · Palette generator →