#2128A6#2128A6

#2128A6 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.6% C 0.195 H 270.1°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#2128A6
RGB	rgb(33, 40, 166)
HSL	hsl(237, 67%, 39%)
HSV	hsv(237, 80%, 65%)
CMYK	cmyk(80.1%, 75.9%, 0%, 34.9%)
CIE-LAB	lab(25.54, 42.47, -67.33)
CIE-LCH	lch(25.54, 79.61, 302.24°)
OKLab	oklab(37.6% 0.0002 -0.195)
OKLCH	oklch(37.6% 0.195 270.1)
XYZ	xyz(8.2666, 4.5931, 36.5199)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2128A6 #A69F21

analogous

#216BA6 #2128A6 #5D21A6

triadic

#2128A6 #A62128 #28A621

tetradic

#2128A6 #A6216B #A69F21 #21A65D

square

#2128A6 #A6216B #A69F21 #21A65D

split-complementary

#2128A6 #A65D21 #6BA621

monochromatic

#0D0F40 #171C73 #2128A6 #2F37D6 #6268E0

Accessibility & contrast

On white

10.94

#2128A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#2128A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2128A6

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2128A6	#FFFFFF	#000000	##FFFFFF
##2128A6	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043AA

Deuteranopia (green-blind)

#0036A4

Tritanopia (blue-blind)

#004D65

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2128a6;
/* rgb */ color: rgb(33, 40, 166);
/* oklch */ color: oklch(37.6% 0.195 270.1);

Tailwind

colors: {
  custom: {
    50: '#7563c2',
    500: '#2128a6',
    950: '#000000',
  },
}

SCSS

$custom: #2128a6;
$custom-light: #7563c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2128a6",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 166
  },
  "hsl": {
    "h": 236.842,
    "s": 66.834,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37603,
    "c": 0.19503,
    "h": 270.1
  },
  "luminance": 0.04594
}

Semantic roles & 50–950 ramp

primary

#2128A6

secondary

#C5BF5E

accent

#E13EEA

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #2128A6

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

Preview Lab → · Contrast checker → · Palette generator →