#2143C3#2143C3

#2143C3 is a dark, highly saturated blue. Relative luminance 0.083; OKLCH L 45.0% C 0.202 H 266.2°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#2143C3
RGB	rgb(33, 67, 195)
HSL	hsl(227, 71%, 45%)
HSV	hsv(227, 83%, 76%)
CMYK	cmyk(83.1%, 65.6%, 0%, 23.5%)
CIE-LAB	lab(34.55, 36.25, -69.73)
CIE-LCH	lch(34.55, 78.59, 297.47°)
OKLab	oklab(44.99% -0.0135 -0.202)
OKLCH	oklch(44.99% 0.202 266.2)
XYZ	xyz(12.4812, 8.2763, 52.5588)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2143C3 #C3A121

analogous

#2194C3 #2143C3 #5021C3

triadic

#2143C3 #C32143 #43C321

tetradic

#2143C3 #C32194 #C3A121 #21C350

square

#2143C3 #C32194 #C3A121 #21C350

split-complementary

#2143C3 #C35021 #94C321

monochromatic

#0F1F5A #18318F #2143C3 #4263DF #778EE8

Accessibility & contrast

On white

7.91

#2143C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#2143C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2143C3

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2143C3	#FFFFFF	#000000	##FFFFFF
##2143C3	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C7

Deuteranopia (green-blind)

#004AC1

Tritanopia (blue-blind)

#00667D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #2143c3;
/* rgb */ color: rgb(33, 67, 195);
/* oklch */ color: oklch(45.0% 0.202 266.2);

Tailwind

colors: {
  custom: {
    50: '#7a77d6',
    500: '#2143c3',
    950: '#000000',
  },
}

SCSS

$custom: #2143c3;
$custom-light: #7a77d6;
$custom-dark: #000000;

JSON

{
  "hex": "#2143c3",
  "rgb": {
    "r": 33,
    "g": 67,
    "b": 195
  },
  "hsl": {
    "h": 227.407,
    "s": 71.053,
    "l": 44.706
  },
  "oklch": {
    "l": 0.44989,
    "c": 0.20247,
    "h": 266.2
  },
  "luminance": 0.08278
}

Semantic roles & 50–950 ramp

primary

#2143C3

secondary

#CFBB71

accent

#C83AEE

background

#F8F7FD

surface

#EFEDFA

border

#CAC8D3

text

#0B0814

muted

#7C7B83

Preview Lab

Preview with #2143C3

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

Preview Lab → · Contrast checker → · Palette generator →