#21397F#21397F

#21397F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.122 H 266.2°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#21397F
RGB	rgb(33, 57, 127)
HSL	hsl(225, 59%, 31%)
HSV	hsv(225, 74%, 50%)
CMYK	cmyk(74%, 55.1%, 0%, 50.2%)
CIE-LAB	lab(26.10, 16.72, -42.38)
CIE-LCH	lch(26.10, 45.56, 291.53°)
OKLab	oklab(36.9% -0.0081 -0.1219)
OKLCH	oklch(36.9% 0.122 266.2)
XYZ	xyz(5.9198, 4.7813, 20.6855)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21397F #7F6721

analogous

#21687F #21397F #38217F

triadic

#21397F #7F2139 #397F21

tetradic

#21397F #7F2168 #7F6721 #217F38

square

#21397F #7F2168 #7F6721 #217F38

split-complementary

#21397F #7F3821 #687F21

monochromatic

#080D1E #14234E #21397F #2E4FB0 #4A6CD0

Accessibility & contrast

On white

10.73

#21397F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#21397F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21397F

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21397F	#FFFFFF	#000000	##FFFFFF
##21397F	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064281

Deuteranopia (green-blind)

#003A7E

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #21397f;
/* rgb */ color: rgb(33, 57, 127);
/* oklch */ color: oklch(36.9% 0.122 266.2);

Tailwind

colors: {
  custom: {
    50: '#6a6ea5',
    500: '#21397f',
    950: '#000000',
  },
}

SCSS

$custom: #21397f;
$custom-light: #6a6ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#21397f",
  "rgb": {
    "r": 33,
    "g": 57,
    "b": 127
  },
  "hsl": {
    "h": 224.681,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.36902,
    "c": 0.12222,
    "h": 266.2
  },
  "luminance": 0.04782
}

Semantic roles & 50–950 ramp

primary

#21397F

secondary

#B2974A

accent

#BA46E2

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21397F

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

Preview Lab → · Contrast checker → · Palette generator →