#21309F#21309F

#21309F is a dark, vivid blue. Relative luminance 0.049; OKLCH L 38.1% C 0.178 H 269.3°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#21309F
RGB	rgb(33, 48, 159)
HSL	hsl(233, 66%, 38%)
HSV	hsv(233, 79%, 62%)
CMYK	cmyk(79.2%, 69.8%, 0%, 37.6%)
CIE-LAB	lab(26.56, 35.12, -61.41)
CIE-LCH	lch(26.56, 70.74, 299.77°)
OKLab	oklab(38.11% -0.0023 -0.1778)
OKLCH	oklch(38.11% 0.178 269.3)
XYZ	xyz(7.9400, 4.9395, 33.3291)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21309F #9F9021

analogous

#216F9F #21309F #51219F

triadic

#21309F #9F2130 #309F21

tetradic

#21309F #9F216F #9F9021 #219F51

square

#21309F #9F216F #9F9021 #219F51

split-complementary

#21309F #9F5121 #6F9F21

monochromatic

#0C113A #16216C #21309F #2C3FD2 #5D6CDD

Accessibility & contrast

On white

10.56

#21309F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#21309F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21309F

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21309F	#FFFFFF	#000000	##FFFFFF
##21309F	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A2

Deuteranopia (green-blind)

#00399D

Tritanopia (blue-blind)

#004F63

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #21309f;
/* rgb */ color: rgb(33, 48, 159);
/* oklch */ color: oklch(38.1% 0.178 269.3);

Tailwind

colors: {
  custom: {
    50: '#7368bc',
    500: '#21309f',
    950: '#000000',
  },
}

SCSS

$custom: #21309f;
$custom-light: #7368bc;
$custom-dark: #000000;

JSON

{
  "hex": "#21309f",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 159
  },
  "hsl": {
    "h": 232.857,
    "s": 65.625,
    "l": 37.647
  },
  "oklch": {
    "l": 0.38114,
    "c": 0.17782,
    "h": 269.3
  },
  "luminance": 0.0494
}

Semantic roles & 50–950 ramp

primary

#21309F

secondary

#C2B55A

accent

#D43FE9

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #21309F

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

Preview Lab → · Contrast checker → · Palette generator →