#2129BA#2129BA

#2129BA is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.0% C 0.218 H 269.1°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#2129BA
RGB	rgb(33, 41, 186)
HSL	hsl(237, 70%, 43%)
HSV	hsv(237, 82%, 73%)
CMYK	cmyk(82.3%, 78%, 0%, 27.1%)
CIE-LAB	lab(27.99, 48.62, -75.26)
CIE-LCH	lch(27.99, 89.60, 302.86°)
OKLab	oklab(39.99% -0.0034 -0.218)
OKLCH	oklch(39.99% 0.218 269.1)
XYZ	xyz(10.2800, 5.4532, 46.9556)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2129BA #BAB221

analogous

#2175BA #2129BA #6621BA

triadic

#2129BA #BA2129 #29BA21

tetradic

#2129BA #BA2175 #BAB221 #21BA66

square

#2129BA #BA2175 #BAB221 #21BA66

split-complementary

#2129BA #BA6621 #75BA21

monochromatic

#0F1252 #181E86 #2129BA #3C44DC #7076E6

Accessibility & contrast

On white

10.04

#2129BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#2129BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2129BA

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2129BA	#FFFFFF	#000000	##FFFFFF
##2129BA	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABE

Deuteranopia (green-blind)

#003AB8

Tritanopia (blue-blind)

#005571

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2129ba;
/* rgb */ color: rgb(33, 41, 186);
/* oklch */ color: oklch(40.0% 0.218 269.1);

Tailwind

colors: {
  custom: {
    50: '#7a65d0',
    500: '#2129ba',
    950: '#000000',
  },
}

SCSS

$custom: #2129ba;
$custom-light: #7a65d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2129ba",
  "rgb": {
    "r": 33,
    "g": 41,
    "b": 186
  },
  "hsl": {
    "h": 236.863,
    "s": 69.863,
    "l": 42.941
  },
  "oklch": {
    "l": 0.3999,
    "c": 0.21806,
    "h": 269.1
  },
  "luminance": 0.05454
}

Semantic roles & 50–950 ramp

primary

#2129BA

secondary

#CCC76B

accent

#E33BED

background

#F8F6FD

surface

#EFEBFA

border

#CAC6D3

text

#0B0614

muted

#7C7A83

Preview Lab

Preview with #2129BA

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

Preview Lab → · Contrast checker → · Palette generator →