#21397D#21397D

#21397D is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.7% C 0.119 H 266.0°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#21397D
RGB	rgb(33, 57, 125)
HSL	hsl(224, 58%, 31%)
HSV	hsv(224, 74%, 49%)
CMYK	cmyk(73.6%, 54.4%, 0%, 51%)
CIE-LAB	lab(25.95, 15.92, -41.37)
CIE-LCH	lch(25.95, 44.33, 291.05°)
OKLab	oklab(36.74% -0.0083 -0.119)
OKLCH	oklch(36.74% 0.119 266)
XYZ	xyz(5.7907, 4.7297, 20.0058)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21397D #7D6521

analogous

#21677D #21397D #37217D

triadic

#21397D #7D2139 #397D21

tetradic

#21397D #7D2167 #7D6521 #217D37

square

#21397D #7D2167 #7D6521 #217D37

split-complementary

#21397D #7D3721 #677D21

monochromatic

#070D1C #14234D #21397D #2E4FAD #496CCF

Accessibility & contrast

On white

10.79

#21397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#21397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21397D

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21397D	#FFFFFF	#000000	##FFFFFF
##21397D	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B427F

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #21397d;
/* rgb */ color: rgb(33, 57, 125);
/* oklch */ color: oklch(36.7% 0.119 266.0);

Tailwind

colors: {
  custom: {
    50: '#696ea3',
    500: '#21397d',
    950: '#000000',
  },
}

SCSS

$custom: #21397d;
$custom-light: #696ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#21397d",
  "rgb": {
    "r": 33,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 224.348,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36739,
    "c": 0.11927,
    "h": 266
  },
  "luminance": 0.0473
}

Semantic roles & 50–950 ramp

primary

#21397D

secondary

#B0954A

accent

#B946E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21397D

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

Preview Lab → · Contrast checker → · Palette generator →