#21428C#21428C

#21428C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.9% C 0.129 H 263.5°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#21428C
RGB	rgb(33, 66, 140)
HSL	hsl(221, 62%, 34%)
HSV	hsv(221, 76%, 55%)
CMYK	cmyk(76.4%, 52.9%, 0%, 45.1%)
CIE-LAB	lab(29.69, 15.65, -44.66)
CIE-LCH	lch(29.69, 47.32, 289.31°)
OKLab	oklab(39.94% -0.0145 -0.1285)
OKLCH	oklch(39.94% 0.129 263.5)
XYZ	xyz(7.3074, 6.1124, 25.6006)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21428C #8C6B21

analogous

#21788C #21428C #35218C

triadic

#21428C #8C2142 #428C21

tetradic

#21428C #8C2178 #8C6B21 #218C35

square

#21428C #8C2178 #8C6B21 #218C35

split-complementary

#21428C #8C3521 #788C21

monochromatic

#0A1329 #152B5A #21428C #2D59BE #517AD6

Accessibility & contrast

On white

9.45

#21428C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#21428C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21428C

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21428C	#FFFFFF	#000000	##FFFFFF
##21428C	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124B8F

Deuteranopia (green-blind)

#00418B

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #21428c;
/* rgb */ color: rgb(33, 66, 140);
/* oklch */ color: oklch(39.9% 0.129 263.5);

Tailwind

colors: {
  custom: {
    50: '#6c75ae',
    500: '#21428c',
    950: '#000000',
  },
}

SCSS

$custom: #21428c;
$custom-light: #6c75ae;
$custom-dark: #000000;

JSON

{
  "hex": "#21428c",
  "rgb": {
    "r": 33,
    "g": 66,
    "b": 140
  },
  "hsl": {
    "h": 221.495,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.39937,
    "c": 0.1293,
    "h": 263.5
  },
  "luminance": 0.06113
}

Semantic roles & 50–950 ramp

primary

#21428C

secondary

#B9994F

accent

#B343E5

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #21428C

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

Preview Lab → · Contrast checker → · Palette generator →