#21318F#21318F

#21318F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.7% C 0.155 H 269.4°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#21318F
RGB	rgb(33, 49, 143)
HSL	hsl(231, 63%, 35%)
HSV	hsv(231, 77%, 56%)
CMYK	cmyk(76.9%, 65.7%, 0%, 43.9%)
CIE-LAB	lab(25.27, 28.48, -53.72)
CIE-LCH	lch(25.27, 60.80, 297.93°)
OKLab	oklab(36.7% -0.0016 -0.1553)
OKLCH	oklch(36.7% 0.155 269.4)
XYZ	xyz(6.6817, 4.5024, 26.4982)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21318F #8F7F21

analogous

#21688F #21318F #48218F

triadic

#21318F #8F2131 #318F21

tetradic

#21318F #8F2168 #8F7F21 #218F48

square

#21318F #8F2168 #8F7F21 #218F48

split-complementary

#21318F #8F4821 #688F21

monochromatic

#0A0F2C #16205D #21318F #2C42C1 #5366D7

Accessibility & contrast

On white

11.05

#21318F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#21318F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21318F

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21318F	#FFFFFF	#000000	##FFFFFF
##21318F	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004192

Deuteranopia (green-blind)

#00378D

Tritanopia (blue-blind)

#004A5B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #21318f;
/* rgb */ color: rgb(33, 49, 143);
/* oklch */ color: oklch(36.7% 0.155 269.4);

Tailwind

colors: {
  custom: {
    50: '#6e69b1',
    500: '#21318f',
    950: '#000000',
  },
}

SCSS

$custom: #21318f;
$custom-light: #6e69b1;
$custom-dark: #000000;

JSON

{
  "hex": "#21318f",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 143
  },
  "hsl": {
    "h": 231.273,
    "s": 62.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.36702,
    "c": 0.15535,
    "h": 269.4
  },
  "luminance": 0.04503
}

Semantic roles & 50–950 ramp

primary

#21318F

secondary

#BBAB51

accent

#CE42E6

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #21318F

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

Preview Lab → · Contrast checker → · Palette generator →