#2128BA#2128BA

#2128BA is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 39.9% C 0.219 H 269.2°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#2128BA
RGB	rgb(33, 40, 186)
HSL	hsl(237, 70%, 43%)
HSV	hsv(237, 82%, 73%)
CMYK	cmyk(82.3%, 78.5%, 0%, 27.1%)
CIE-LAB	lab(27.80, 49.15, -75.57)
CIE-LCH	lch(27.80, 90.14, 303.04°)
OKLab	oklab(39.86% -0.0032 -0.2189)
OKLCH	oklch(39.86% 0.219 269.2)
XYZ	xyz(10.2459, 5.3849, 46.9442)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2128BA #BAB321

analogous

#2174BA #2128BA #6621BA

triadic

#2128BA #BA2128 #28BA21

tetradic

#2128BA #BA2174 #BAB321 #21BA66

square

#2128BA #BA2174 #BAB321 #21BA66

split-complementary

#2128BA #BA6621 #74BA21

monochromatic

#0F1252 #181D86 #2128BA #3C43DC #7075E6

Accessibility & contrast

On white

10.11

#2128BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#2128BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2128BA

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2128BA	#FFFFFF	#000000	##FFFFFF
##2128BA	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049BE

Deuteranopia (green-blind)

#003AB8

Tritanopia (blue-blind)

#005571

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2128ba;
/* rgb */ color: rgb(33, 40, 186);
/* oklch */ color: oklch(39.9% 0.219 269.2);

Tailwind

colors: {
  custom: {
    50: '#7b65d0',
    500: '#2128ba',
    950: '#000000',
  },
}

SCSS

$custom: #2128ba;
$custom-light: #7b65d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2128ba",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 186
  },
  "hsl": {
    "h": 237.255,
    "s": 69.863,
    "l": 42.941
  },
  "oklch": {
    "l": 0.3986,
    "c": 0.21893,
    "h": 269.2
  },
  "luminance": 0.05386
}

Semantic roles & 50–950 ramp

primary

#2128BA

secondary

#CCC86B

accent

#E53BED

background

#F8F6FD

surface

#EFEBFA

border

#CAC6D3

text

#0B0614

muted

#7C7A83

Preview Lab

Preview with #2128BA

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

Preview Lab → · Contrast checker → · Palette generator →