#21479B#21479B

#21479B is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.2% C 0.144 H 263.2°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#21479B
RGB	rgb(33, 71, 155)
HSL	hsl(221, 65%, 37%)
HSV	hsv(221, 79%, 61%)
CMYK	cmyk(78.7%, 54.2%, 0%, 39.2%)
CIE-LAB	lab(32.25, 18.19, -49.69)
CIE-LCH	lch(32.25, 52.91, 290.10°)
OKLab	oklab(42.23% -0.0169 -0.1432)
OKLCH	oklch(42.23% 0.144 263.2)
XYZ	xyz(8.7947, 7.1954, 31.9293)
Luminance	0.0720 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21479B #9B7521

analogous

#21849B #21479B #38219B

triadic

#21479B #9B2147 #479B21

tetradic

#21479B #9B2184 #9B7521 #219B38

square

#21479B #9B2184 #9B7521 #219B38

split-complementary

#21479B #9B3821 #849B21

monochromatic

#0C1936 #163069 #21479B #2C5ECD #5A83DC

Accessibility & contrast

On white

8.61

#21479B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#21479B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21479B

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21479B	#FFFFFF	#000000	##FFFFFF
##21479B	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05529E

Deuteranopia (green-blind)

#004799

Tritanopia (blue-blind)

#005C6A

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #21479b;
/* rgb */ color: rgb(33, 71, 155);
/* oklch */ color: oklch(42.2% 0.144 263.2);

Tailwind

colors: {
  custom: {
    50: '#7079b9',
    500: '#21479b',
    950: '#000000',
  },
}

SCSS

$custom: #21479b;
$custom-light: #7079b9;
$custom-dark: #000000;

JSON

{
  "hex": "#21479b",
  "rgb": {
    "r": 33,
    "g": 71,
    "b": 155
  },
  "hsl": {
    "h": 221.311,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.4223,
    "c": 0.14419,
    "h": 263.2
  },
  "luminance": 0.07196
}

Semantic roles & 50–950 ramp

primary

#21479B

secondary

#C0A058

accent

#B440E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #21479B

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

Preview Lab → · Contrast checker → · Palette generator →