#2128A7#2128A7

#2128A7 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.7% C 0.196 H 270.0°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#2128A7
RGB	rgb(33, 40, 167)
HSL	hsl(237, 67%, 39%)
HSV	hsv(237, 80%, 65%)
CMYK	cmyk(80.2%, 76%, 0%, 34.5%)
CIE-LAB	lab(25.65, 42.81, -67.75)
CIE-LCH	lch(25.65, 80.15, 302.29°)
OKLab	oklab(37.71% 0 -0.1963)
OKLCH	oklch(37.71% 0.196 270)
XYZ	xyz(8.3587, 4.6300, 37.0049)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2128A7 #A7A021

analogous

#216BA7 #2128A7 #5D21A7

triadic

#2128A7 #A72128 #28A721

tetradic

#2128A7 #A7216B #A7A021 #21A75D

square

#2128A7 #A7216B #A7A021 #21A75D

split-complementary

#2128A7 #A75D21 #6BA721

monochromatic

#0D1041 #171C74 #2128A7 #2F38D6 #6269E0

Accessibility & contrast

On white

10.90

#2128A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#2128A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2128A7

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2128A7	#FFFFFF	#000000	##FFFFFF
##2128A7	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043AB

Deuteranopia (green-blind)

#0036A5

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2128a7;
/* rgb */ color: rgb(33, 40, 167);
/* oklch */ color: oklch(37.7% 0.196 270.0);

Tailwind

colors: {
  custom: {
    50: '#7664c2',
    500: '#2128a7',
    950: '#000000',
  },
}

SCSS

$custom: #2128a7;
$custom-light: #7664c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2128a7",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 167
  },
  "hsl": {
    "h": 236.866,
    "s": 67,
    "l": 39.216
  },
  "oklch": {
    "l": 0.37714,
    "c": 0.19626,
    "h": 270
  },
  "luminance": 0.04631
}

Semantic roles & 50–950 ramp

primary

#2128A7

secondary

#C5C05F

accent

#E13EEA

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #2128A7

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

Preview Lab → · Contrast checker → · Palette generator →