#21317D#21317D

#21317D is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.0% C 0.130 H 269.4°. Best body text is #FFFFFF at 11.67:1 contrast (WCAG AA passes).

Color values

HEX	#21317D
RGB	rgb(33, 49, 125)
HSL	hsl(230, 58%, 31%)
HSV	hsv(230, 74%, 49%)
CMYK	cmyk(73.6%, 60.8%, 0%, 51%)
CIE-LAB	lab(23.67, 21.52, -45.07)
CIE-LCH	lch(23.67, 49.95, 295.53°)
OKLab	oklab(35.03% -0.0013 -0.13)
OKLCH	oklch(35.03% 0.13 269.4)
XYZ	xyz(5.4259, 4.0001, 19.8842)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21317D #7D6D21

analogous

#215F7D #21317D #3F217D

triadic

#21317D #7D2131 #317D21

tetradic

#21317D #7D215F #7D6D21 #217D3F

square

#21317D #7D215F #7D6D21 #217D3F

split-complementary

#21317D #7D3F21 #5F7D21

monochromatic

#070B1C #141E4D #21317D #2E44AD #4961CF

Accessibility & contrast

On white

11.67

#21317D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#21317D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21317D

11.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21317D	#FFFFFF	#000000	##FFFFFF
##21317D	1.00	11.67	1.80	11.67
#FFFFFF	11.67	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D80

Deuteranopia (green-blind)

#00347C

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #21317d;
/* rgb */ color: rgb(33, 49, 125);
/* oklch */ color: oklch(35.0% 0.130 269.4);

Tailwind

colors: {
  custom: {
    50: '#6a68a3',
    500: '#21317d',
    950: '#000000',
  },
}

SCSS

$custom: #21317d;
$custom-light: #6a68a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21317d",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 125
  },
  "hsl": {
    "h": 229.565,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.35027,
    "c": 0.12999,
    "h": 269.4
  },
  "luminance": 0.04001
}

Semantic roles & 50–950 ramp

primary

#21317D

secondary

#B09E4A

accent

#C646E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21317D

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

Preview Lab → · Contrast checker → · Palette generator →