#21309E#21309E

#21309E is a dark, vivid blue. Relative luminance 0.049; OKLCH L 38.0% C 0.177 H 269.3°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#21309E
RGB	rgb(33, 48, 158)
HSL	hsl(233, 65%, 37%)
HSV	hsv(233, 79%, 62%)
CMYK	cmyk(79.1%, 69.6%, 0%, 38%)
CIE-LAB	lab(26.46, 34.75, -60.96)
CIE-LCH	lch(26.46, 70.17, 299.69°)
OKLab	oklab(38.01% -0.0022 -0.1765)
OKLCH	oklch(38.01% 0.177 269.3)
XYZ	xyz(7.8536, 4.9050, 32.8740)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21309E #9E8F21

analogous

#216F9E #21309E #51219E

triadic

#21309E #9E2130 #309E21

tetradic

#21309E #9E216F #9E8F21 #219E51

square

#21309E #9E216F #9E8F21 #219E51

split-complementary

#21309E #9E5121 #6F9E21

monochromatic

#0C1139 #16216B #21309E #2C3FD1 #5C6CDD

Accessibility & contrast

On white

10.60

#21309E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#21309E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21309E

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21309E	#FFFFFF	#000000	##FFFFFF
##21309E	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A1

Deuteranopia (green-blind)

#00399C

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #21309e;
/* rgb */ color: rgb(33, 48, 158);
/* oklch */ color: oklch(38.0% 0.177 269.3);

Tailwind

colors: {
  custom: {
    50: '#7268bc',
    500: '#21309e',
    950: '#000000',
  },
}

SCSS

$custom: #21309e;
$custom-light: #7268bc;
$custom-dark: #000000;

JSON

{
  "hex": "#21309e",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 158
  },
  "hsl": {
    "h": 232.8,
    "s": 65.445,
    "l": 37.451
  },
  "oklch": {
    "l": 0.38012,
    "c": 0.17652,
    "h": 269.3
  },
  "luminance": 0.04906
}

Semantic roles & 50–950 ramp

primary

#21309E

secondary

#C1B559

accent

#D43FE8

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #21309E

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

Preview Lab → · Contrast checker → · Palette generator →