#221BB3#221BB3

#221BB3 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.6% C 0.221 H 270.5°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#221BB3
RGB	rgb(34, 27, 179)
HSL	hsl(243, 74%, 40%)
HSV	hsv(243, 85%, 70%)
CMYK	cmyk(81%, 84.9%, 0%, 29.8%)
CIE-LAB	lab(24.88, 53.24, -76.25)
CIE-LCH	lch(24.88, 92.99, 304.92°)
OKLab	oklab(37.6% 0.002 -0.2206)
OKLCH	oklch(37.6% 0.221 270.5)
XYZ	xyz(9.1856, 4.3776, 42.9999)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#221BB3 #ACB31B

analogous

#1B60B3 #221BB3 #6E1BB3

triadic

#221BB3 #B3221B #1BB322

tetradic

#221BB3 #B31B60 #ACB31B #1BB36E

square

#221BB3 #B31B60 #ACB31B #1BB36E

split-complementary

#221BB3 #B36E1B #60B31B

monochromatic

#0E0B49 #18137E #221BB3 #342CDF #6761E7

Accessibility & contrast

On white

11.20

#221BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#221BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #221BB3

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##221BB3	#FFFFFF	#000000	##FFFFFF
##221BB3	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B7

Deuteranopia (green-blind)

#0033B1

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #221bb3;
/* rgb */ color: rgb(34, 27, 179);
/* oklch */ color: oklch(37.6% 0.221 270.5);

Tailwind

colors: {
  custom: {
    50: '#7a5dcb',
    500: '#221bb3',
    950: '#000000',
  },
}

SCSS

$custom: #221bb3;
$custom-light: #7a5dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#221bb3",
  "rgb": {
    "r": 34,
    "g": 27,
    "b": 179
  },
  "hsl": {
    "h": 242.763,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.376,
    "c": 0.22064,
    "h": 270.5
  },
  "luminance": 0.04379
}

Semantic roles & 50–950 ramp

primary

#221BB3

secondary

#C7CC5E

accent

#F037E8

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #221BB3

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

Preview Lab → · Contrast checker → · Palette generator →