#2143B4#2143B4

#2143B4 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.6% C 0.183 H 265.9°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#2143B4
RGB	rgb(33, 67, 180)
HSL	hsl(226, 69%, 42%)
HSV	hsv(226, 82%, 71%)
CMYK	cmyk(81.7%, 62.8%, 0%, 29.4%)
CIE-LAB	lab(33.20, 30.61, -63.11)
CIE-LCH	lch(33.20, 70.14, 295.88°)
OKLab	oklab(43.58% -0.0132 -0.1826)
OKLCH	oklch(43.58% 0.183 265.9)
XYZ	xyz(10.8697, 7.6316, 44.0713)
Luminance	0.0763 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2143B4 #B49221

analogous

#218DB4 #2143B4 #4821B4

triadic

#2143B4 #B42143 #43B421

tetradic

#2143B4 #B4218D #B49221 #21B448

square

#2143B4 #B4218D #B49221 #21B448

split-complementary

#2143B4 #B44821 #8DB421

monochromatic

#0E1C4D #183080 #2143B4 #385DDA #6B87E4

Accessibility & contrast

On white

8.31

#2143B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#2143B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2143B4

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2143B4	#FFFFFF	#000000	##FFFFFF
##2143B4	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2143b4;
/* rgb */ color: rgb(33, 67, 180);
/* oklch */ color: oklch(43.6% 0.183 265.9);

Tailwind

colors: {
  custom: {
    50: '#7676cb',
    500: '#2143b4',
    950: '#000000',
  },
}

SCSS

$custom: #2143b4;
$custom-light: #7676cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2143b4",
  "rgb": {
    "r": 33,
    "g": 67,
    "b": 180
  },
  "hsl": {
    "h": 226.122,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.43582,
    "c": 0.18313,
    "h": 265.9
  },
  "luminance": 0.07633
}

Semantic roles & 50–950 ramp

primary

#2143B4

secondary

#CAB367

accent

#C33CEC

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2143B4

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

Preview Lab → · Contrast checker → · Palette generator →