#2123A4#2123A4

#2123A4 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.7% C 0.197 H 270.6°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#2123A4
RGB	rgb(33, 35, 164)
HSL	hsl(239, 66%, 39%)
HSV	hsv(239, 80%, 64%)
CMYK	cmyk(79.9%, 78.7%, 0%, 35.7%)
CIE-LAB	lab(24.34, 44.58, -68.12)
CIE-LCH	lch(24.34, 81.41, 303.21°)
OKLab	oklab(36.69% 0.0022 -0.1972)
OKLCH	oklch(36.69% 0.197 270.6)
XYZ	xyz(7.9268, 4.2048, 35.5086)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2123A4 #A4A221

analogous

#2164A4 #2123A4 #6021A4

triadic

#2123A4 #A42123 #23A421

tetradic

#2123A4 #A42164 #A4A221 #21A460

square

#2123A4 #A42164 #A4A221 #21A460

split-complementary

#2123A4 #A46021 #64A421

monochromatic

#0C0D3E #171871 #2123A4 #2D30D5 #6062DF

Accessibility & contrast

On white

11.41

#2123A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#2123A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2123A4

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2123A4	#FFFFFF	#000000	##FFFFFF
##2123A4	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A8

Deuteranopia (green-blind)

#0033A2

Tritanopia (blue-blind)

#004A63

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2123a4;
/* rgb */ color: rgb(33, 35, 164);
/* oklch */ color: oklch(36.7% 0.197 270.6);

Tailwind

colors: {
  custom: {
    50: '#7560c0',
    500: '#2123a4',
    950: '#000000',
  },
}

SCSS

$custom: #2123a4;
$custom-light: #7560c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2123a4",
  "rgb": {
    "r": 33,
    "g": 35,
    "b": 164
  },
  "hsl": {
    "h": 239.084,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.36686,
    "c": 0.19726,
    "h": 270.6
  },
  "luminance": 0.04206
}

Semantic roles & 50–950 ramp

primary

#2123A4

secondary

#C4C25D

accent

#E73EE9

background

#F7F5FC

surface

#EEEAF8

border

#C9C6D1

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #2123A4

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

Preview Lab → · Contrast checker → · Palette generator →