#21178F#21178F

#21178F is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.7% C 0.182 H 273.4°. Best body text is #FFFFFF at 13.26:1 contrast (WCAG AA passes).

Color values

HEX	#21178F
RGB	rgb(33, 23, 143)
HSL	hsl(245, 72%, 33%)
HSV	hsv(245, 84%, 56%)
CMYK	cmyk(76.9%, 83.9%, 0%, 43.9%)
CIE-LAB	lab(19.72, 43.92, -62.87)
CIE-LCH	lch(19.72, 76.69, 304.93°)
OKLab	oklab(32.74% 0.0108 -0.1819)
OKLCH	oklch(32.74% 0.182 273.4)
XYZ	xyz(5.8899, 2.9187, 26.2342)
Luminance	0.0292 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21178F #858F17

analogous

#17498F #21178F #5D178F

triadic

#21178F #8F2117 #178F21

tetradic

#21178F #8F1749 #858F17 #178F5D

square

#21178F #8F1749 #858F17 #178F5D

split-complementary

#21178F #8F5D17 #498F17

monochromatic

#090626 #150F5A #21178F #2D1FC4 #4D40E0

Accessibility & contrast

On white

13.26

#21178F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#21178F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21178F

13.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21178F	#FFFFFF	#000000	##FFFFFF
##21178F	1.00	13.26	1.58	13.26
#FFFFFF	13.26	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003592

Deuteranopia (green-blind)

#002A8D

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #21178f;
/* rgb */ color: rgb(33, 23, 143);
/* oklch */ color: oklch(32.7% 0.182 273.4);

Tailwind

colors: {
  custom: {
    50: '#7158b1',
    500: '#21178f',
    950: '#000000',
  },
}

SCSS

$custom: #21178f;
$custom-light: #7158b1;
$custom-dark: #000000;

JSON

{
  "hex": "#21178f",
  "rgb": {
    "r": 33,
    "g": 23,
    "b": 143
  },
  "hsl": {
    "h": 245,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32735,
    "c": 0.18218,
    "h": 273.4
  },
  "luminance": 0.02919
}

Semantic roles & 50–950 ramp

primary

#21178F

secondary

#B6C141

accent

#EF39E0

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #21178F

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

Preview Lab → · Contrast checker → · Palette generator →