#2127AA#2127AA

#2127AA is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 37.9% C 0.201 H 270.0°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#2127AA
RGB	rgb(33, 39, 170)
HSL	hsl(237, 67%, 40%)
HSV	hsv(237, 81%, 67%)
CMYK	cmyk(80.6%, 77.1%, 0%, 33.3%)
CIE-LAB	lab(25.79, 44.39, -69.34)
CIE-LCH	lch(25.79, 82.33, 302.63°)
OKLab	oklab(37.91% -0.0001 -0.2008)
OKLCH	oklch(37.91% 0.201 270)
XYZ	xyz(8.6059, 4.6757, 38.4713)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2127AA #AAA421

analogous

#216CAA #2127AA #5F21AA

triadic

#2127AA #AA2127 #27AA21

tetradic

#2127AA #AA216C #AAA421 #21AA5F

square

#2127AA #AA216C #AAA421 #21AA5F

split-complementary

#2127AA #AA5F21 #6CAA21

monochromatic

#0D0F43 #171B77 #2127AA #3138D7 #646AE1

Accessibility & contrast

On white

10.85

#2127AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#2127AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2127AA

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2127AA	#FFFFFF	#000000	##FFFFFF
##2127AA	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044AE

Deuteranopia (green-blind)

#0036A8

Tritanopia (blue-blind)

#004E67

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2127aa;
/* rgb */ color: rgb(33, 39, 170);
/* oklch */ color: oklch(37.9% 0.201 270.0);

Tailwind

colors: {
  custom: {
    50: '#7663c5',
    500: '#2127aa',
    950: '#000000',
  },
}

SCSS

$custom: #2127aa;
$custom-light: #7663c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2127aa",
  "rgb": {
    "r": 33,
    "g": 39,
    "b": 170
  },
  "hsl": {
    "h": 237.372,
    "s": 67.488,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37909,
    "c": 0.20085,
    "h": 270
  },
  "luminance": 0.04677
}

Semantic roles & 50–950 ramp

primary

#2127AA

secondary

#C6C261

accent

#E33DEA

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #2127AA

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

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