#2129A4#2129A4

#2129A4 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.5% C 0.192 H 270.0°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#2129A4
RGB	rgb(33, 41, 164)
HSL	hsl(236, 66%, 39%)
HSV	hsv(236, 80%, 64%)
CMYK	cmyk(79.9%, 75%, 0%, 35.7%)
CIE-LAB	lab(25.53, 41.20, -66.15)
CIE-LCH	lch(25.53, 77.93, 301.92°)
OKLab	oklab(37.53% 0.0002 -0.1916)
OKLCH	oklch(37.53% 0.192 270)
XYZ	xyz(8.1187, 4.5886, 35.5726)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2129A4 #A49C21

analogous

#216AA4 #2129A4 #5A21A4

triadic

#2129A4 #A42129 #29A421

tetradic

#2129A4 #A4216A #A49C21 #21A45A

square

#2129A4 #A4216A #A49C21 #21A45A

split-complementary

#2129A4 #A45A21 #6AA421

monochromatic

#0C103E #171C71 #2129A4 #2D38D5 #6068DF

Accessibility & contrast

On white

10.95

#2129A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#2129A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2129A4

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2129A4	#FFFFFF	#000000	##FFFFFF
##2129A4	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A8

Deuteranopia (green-blind)

#0036A2

Tritanopia (blue-blind)

#004D64

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2129a4;
/* rgb */ color: rgb(33, 41, 164);
/* oklch */ color: oklch(37.5% 0.192 270.0);

Tailwind

colors: {
  custom: {
    50: '#7564c0',
    500: '#2129a4',
    950: '#000000',
  },
}

SCSS

$custom: #2129a4;
$custom-light: #7564c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2129a4",
  "rgb": {
    "r": 33,
    "g": 41,
    "b": 164
  },
  "hsl": {
    "h": 236.336,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.37528,
    "c": 0.19159,
    "h": 270
  },
  "luminance": 0.0459
}

Semantic roles & 50–950 ramp

primary

#2129A4

secondary

#C4BE5D

accent

#DF3EE9

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #2129A4

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

Preview Lab → · Contrast checker → · Palette generator →