#2128A1#2128A1

#2128A1 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.0% C 0.189 H 270.3°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#2128A1
RGB	rgb(33, 40, 161)
HSL	hsl(237, 66%, 38%)
HSV	hsv(237, 80%, 63%)
CMYK	cmyk(79.5%, 75.2%, 0%, 36.9%)
CIE-LAB	lab(24.99, 40.74, -65.21)
CIE-LCH	lch(24.99, 76.89, 302.00°)
OKLab	oklab(37.05% 0.001 -0.1889)
OKLCH	oklch(37.05% 0.189 270.3)
XYZ	xyz(7.8168, 4.4132, 34.1512)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2128A1 #A19A21

analogous

#2168A1 #2128A1 #5A21A1

triadic

#2128A1 #A12128 #28A121

tetradic

#2128A1 #A12168 #A19A21 #21A15A

square

#2128A1 #A12168 #A19A21 #21A15A

split-complementary

#2128A1 #A15A21 #68A121

monochromatic

#0C0F3B #171B6E #2128A1 #2C35D4 #5E65DE

Accessibility & contrast

On white

11.15

#2128A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#2128A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2128A1

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2128A1	#FFFFFF	#000000	##FFFFFF
##2128A1	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A5

Deuteranopia (green-blind)

#00359F

Tritanopia (blue-blind)

#004B62

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2128a1;
/* rgb */ color: rgb(33, 40, 161);
/* oklch */ color: oklch(37.0% 0.189 270.3);

Tailwind

colors: {
  custom: {
    50: '#7463be',
    500: '#2128a1',
    950: '#000000',
  },
}

SCSS

$custom: #2128a1;
$custom-light: #7463be;
$custom-dark: #000000;

JSON

{
  "hex": "#2128a1",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 161
  },
  "hsl": {
    "h": 236.719,
    "s": 65.979,
    "l": 38.039
  },
  "oklch": {
    "l": 0.3705,
    "c": 0.18886,
    "h": 270.3
  },
  "luminance": 0.04414
}

Semantic roles & 50–950 ramp

primary

#2128A1

secondary

#C3BD5B

accent

#E03FE9

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #2128A1

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

Preview Lab → · Contrast checker → · Palette generator →