#21177B#21177B

#21177B is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.4% C 0.158 H 275.9°. Best body text is #FFFFFF at 14.25:1 contrast (WCAG AA passes).

Color values

HEX	#21177B
RGB	rgb(33, 23, 123)
HSL	hsl(246, 68%, 29%)
HSV	hsv(246, 81%, 48%)
CMYK	cmyk(73.2%, 81.3%, 0%, 51.8%)
CIE-LAB	lab(17.30, 37.45, -54.26)
CIE-LCH	lch(17.30, 65.93, 304.61°)
OKLab	oklab(30.35% 0.0162 -0.1569)
OKLCH	oklch(30.35% 0.158 275.9)
XYZ	xyz(4.5076, 2.3658, 18.9541)
Luminance	0.0237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21177B #717B17

analogous

#173F7B #21177B #53177B

triadic

#21177B #7B2117 #177B21

tetradic

#21177B #7B173F #717B17 #177B53

square

#21177B #7B173F #717B17 #177B53

split-complementary

#21177B #7B5317 #3F7B17

monochromatic

#07051A #130D47 #21177B #2F21AF #4433D9

Accessibility & contrast

On white

14.25

#21177B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#21177B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21177B

14.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21177B	#FFFFFF	#000000	##FFFFFF
##21177B	1.00	14.25	1.47	14.25
#FFFFFF	14.25	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7E

Deuteranopia (green-blind)

#002679

Tritanopia (blue-blind)

#003549

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #21177b;
/* rgb */ color: rgb(33, 23, 123);
/* oklch */ color: oklch(30.4% 0.158 275.9);

Tailwind

colors: {
  custom: {
    50: '#6c57a2',
    500: '#21177b',
    950: '#000000',
  },
}

SCSS

$custom: #21177b;
$custom-light: #6c57a2;
$custom-dark: #000000;

JSON

{
  "hex": "#21177b",
  "rgb": {
    "r": 33,
    "g": 23,
    "b": 123
  },
  "hsl": {
    "h": 246,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.30355,
    "c": 0.1577,
    "h": 275.9
  },
  "luminance": 0.02366
}

Semantic roles & 50–950 ramp

primary

#21177B

secondary

#A5B03E

accent

#EB3CDA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #21177B

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

Preview Lab → · Contrast checker → · Palette generator →