#21388F#21388F

#21388F is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.1% C 0.147 H 267.5°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#21388F
RGB	rgb(33, 56, 143)
HSL	hsl(227, 63%, 35%)
HSV	hsv(227, 77%, 56%)
CMYK	cmyk(76.9%, 60.8%, 0%, 43.9%)
CIE-LAB	lab(27.11, 23.73, -50.70)
CIE-LCH	lch(27.11, 55.98, 295.08°)
OKLab	oklab(38.07% -0.0064 -0.1464)
OKLCH	oklch(38.07% 0.147 267.5)
XYZ	xyz(6.9976, 5.1341, 26.6035)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21388F #8F7821

analogous

#216F8F #21388F #41218F

triadic

#21388F #8F2138 #388F21

tetradic

#21388F #8F216F #8F7821 #218F41

square

#21388F #8F216F #8F7821 #218F41

split-complementary

#21388F #8F4121 #6F8F21

monochromatic

#0A112C #16255D #21388F #2C4BC1 #536FD7

Accessibility & contrast

On white

10.36

#21388F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#21388F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21388F

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21388F	#FFFFFF	#000000	##FFFFFF
##21388F	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004592

Deuteranopia (green-blind)

#003B8D

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #21388f;
/* rgb */ color: rgb(33, 56, 143);
/* oklch */ color: oklch(38.1% 0.147 267.5);

Tailwind

colors: {
  custom: {
    50: '#6e6eb1',
    500: '#21388f',
    950: '#000000',
  },
}

SCSS

$custom: #21388f;
$custom-light: #6e6eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#21388f",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 143
  },
  "hsl": {
    "h": 227.455,
    "s": 62.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.38068,
    "c": 0.14655,
    "h": 267.5
  },
  "luminance": 0.05135
}

Semantic roles & 50–950 ramp

primary

#21388F

secondary

#BBA551

accent

#C342E6

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #21388F

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

Preview Lab → · Contrast checker → · Palette generator →