#21317F#21317F

#21317F is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.133 H 269.4°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#21317F
RGB	rgb(33, 49, 127)
HSL	hsl(230, 59%, 31%)
HSV	hsv(230, 74%, 50%)
CMYK	cmyk(74%, 61.4%, 0%, 50.2%)
CIE-LAB	lab(23.84, 22.31, -46.06)
CIE-LCH	lch(23.84, 51.17, 295.84°)
OKLab	oklab(35.21% -0.0013 -0.1329)
OKLCH	oklch(35.21% 0.133 269.4)
XYZ	xyz(5.5550, 4.0517, 20.5639)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21317F #7F6F21

analogous

#21607F #21317F #40217F

triadic

#21317F #7F2131 #317F21

tetradic

#21317F #7F2160 #7F6F21 #217F40

square

#21317F #7F2160 #7F6F21 #217F40

split-complementary

#21317F #7F4021 #607F21

monochromatic

#080C1E #141E4E #21317F #2E44B0 #4A61D0

Accessibility & contrast

On white

11.60

#21317F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#21317F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21317F

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21317F	#FFFFFF	#000000	##FFFFFF
##21317F	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D82

Deuteranopia (green-blind)

#00357D

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #21317f;
/* rgb */ color: rgb(33, 49, 127);
/* oklch */ color: oklch(35.2% 0.133 269.4);

Tailwind

colors: {
  custom: {
    50: '#6a68a5',
    500: '#21317f',
    950: '#000000',
  },
}

SCSS

$custom: #21317f;
$custom-light: #6a68a5;
$custom-dark: #000000;

JSON

{
  "hex": "#21317f",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 127
  },
  "hsl": {
    "h": 229.787,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.35206,
    "c": 0.13288,
    "h": 269.4
  },
  "luminance": 0.04052
}

Semantic roles & 50–950 ramp

primary

#21317F

secondary

#B2A04A

accent

#C746E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21317F

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

Preview Lab → · Contrast checker → · Palette generator →