#21397C#21397C

#21397C is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.7% C 0.118 H 265.9°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#21397C
RGB	rgb(33, 57, 124)
HSL	hsl(224, 58%, 31%)
HSV	hsv(224, 73%, 49%)
CMYK	cmyk(73.4%, 54%, 0%, 51.4%)
CIE-LAB	lab(25.87, 15.53, -40.86)
CIE-LCH	lch(25.87, 43.71, 290.80°)
OKLab	oklab(36.66% -0.0084 -0.1175)
OKLCH	oklch(36.66% 0.118 265.9)
XYZ	xyz(5.7271, 4.7042, 19.6711)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21397C #7C6421

analogous

#21667C #21397C #36217C

triadic

#21397C #7C2139 #397C21

tetradic

#21397C #7C2166 #7C6421 #217C36

square

#21397C #7C2166 #7C6421 #217C36

split-complementary

#21397C #7C3621 #667C21

monochromatic

#070D1B #14234C #21397C #2E4FAC #496CCF

Accessibility & contrast

On white

10.82

#21397C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#21397C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21397C

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21397C	#FFFFFF	#000000	##FFFFFF
##21397C	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D427E

Deuteranopia (green-blind)

#00397B

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #21397c;
/* rgb */ color: rgb(33, 57, 124);
/* oklch */ color: oklch(36.7% 0.118 265.9);

Tailwind

colors: {
  custom: {
    50: '#696ea2',
    500: '#21397c',
    950: '#000000',
  },
}

SCSS

$custom: #21397c;
$custom-light: #696ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#21397c",
  "rgb": {
    "r": 33,
    "g": 57,
    "b": 124
  },
  "hsl": {
    "h": 224.176,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36658,
    "c": 0.11778,
    "h": 265.9
  },
  "luminance": 0.04705
}

Semantic roles & 50–950 ramp

primary

#21397C

secondary

#AF944A

accent

#B847E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21397C

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

Preview Lab → · Contrast checker → · Palette generator →