#2128A0#2128A0

#2128A0 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.9% C 0.188 H 270.4°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#2128A0
RGB	rgb(33, 40, 160)
HSL	hsl(237, 66%, 38%)
HSV	hsv(237, 79%, 63%)
CMYK	cmyk(79.4%, 75%, 0%, 37.3%)
CIE-LAB	lab(24.88, 40.40, -64.78)
CIE-LCH	lch(24.88, 76.34, 301.95°)
OKLab	oklab(36.94% 0.0012 -0.1876)
OKLCH	oklch(36.94% 0.188 270.4)
XYZ	xyz(7.7290, 4.3781, 33.6886)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2128A0 #A09921

analogous

#2167A0 #2128A0 #5921A0

triadic

#2128A0 #A02128 #28A021

tetradic

#2128A0 #A02167 #A09921 #21A059

square

#2128A0 #A02167 #A09921 #21A059

split-complementary

#2128A0 #A05921 #67A021

monochromatic

#0C0F3B #171B6D #2128A0 #2B35D3 #5E65DE

Accessibility & contrast

On white

11.20

#2128A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#2128A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2128A0

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2128A0	#FFFFFF	#000000	##FFFFFF
##2128A0	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A3

Deuteranopia (green-blind)

#00359E

Tritanopia (blue-blind)

#004B62

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2128a0;
/* rgb */ color: rgb(33, 40, 160);
/* oklch */ color: oklch(36.9% 0.188 270.4);

Tailwind

colors: {
  custom: {
    50: '#7463bd',
    500: '#2128a0',
    950: '#000000',
  },
}

SCSS

$custom: #2128a0;
$custom-light: #7463bd;
$custom-dark: #000000;

JSON

{
  "hex": "#2128a0",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 160
  },
  "hsl": {
    "h": 236.693,
    "s": 65.803,
    "l": 37.843
  },
  "oklch": {
    "l": 0.3694,
    "c": 0.18762,
    "h": 270.4
  },
  "luminance": 0.04379
}

Semantic roles & 50–950 ramp

primary

#2128A0

secondary

#C2BD5B

accent

#DF3FE9

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #2128A0

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

Preview Lab → · Contrast checker → · Palette generator →