#2128AA#2128AA

#2128AA is a dark, vivid blue. Relative luminance 0.047; OKLCH L 38.0% C 0.200 H 269.9°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#2128AA
RGB	rgb(33, 40, 170)
HSL	hsl(237, 67%, 40%)
HSV	hsv(237, 81%, 67%)
CMYK	cmyk(80.6%, 76.5%, 0%, 33.3%)
CIE-LAB	lab(25.99, 43.83, -69.01)
CIE-LCH	lch(25.99, 81.75, 302.42°)
OKLab	oklab(38.05% -0.0004 -0.1999)
OKLCH	oklch(38.05% 0.2 269.9)
XYZ	xyz(8.6392, 4.7422, 38.4824)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2128AA #AAA321

analogous

#216DAA #2128AA #5E21AA

triadic

#2128AA #AA2128 #28AA21

tetradic

#2128AA #AA216D #AAA321 #21AA5E

square

#2128AA #AA216D #AAA321 #21AA5E

split-complementary

#2128AA #AA5E21 #6DAA21

monochromatic

#0D1043 #171C77 #2128AA #313AD7 #646BE1

Accessibility & contrast

On white

10.78

#2128AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#2128AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2128AA

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2128AA	#FFFFFF	#000000	##FFFFFF
##2128AA	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044AE

Deuteranopia (green-blind)

#0037A8

Tritanopia (blue-blind)

#004F67

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2128aa;
/* rgb */ color: rgb(33, 40, 170);
/* oklch */ color: oklch(38.0% 0.200 269.9);

Tailwind

colors: {
  custom: {
    50: '#7664c5',
    500: '#2128aa',
    950: '#000000',
  },
}

SCSS

$custom: #2128aa;
$custom-light: #7664c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2128aa",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 170
  },
  "hsl": {
    "h": 236.934,
    "s": 67.488,
    "l": 39.804
  },
  "oklch": {
    "l": 0.38049,
    "c": 0.19991,
    "h": 269.9
  },
  "luminance": 0.04743
}

Semantic roles & 50–950 ramp

primary

#2128AA

secondary

#C6C161

accent

#E23DEA

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #2128AA

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

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