#21386B#21386B

#21386B is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.1% C 0.093 H 264.0°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#21386B
RGB	rgb(33, 56, 107)
HSL	hsl(221, 53%, 27%)
HSV	hsv(221, 69%, 42%)
CMYK	cmyk(69.2%, 47.7%, 0%, 58%)
CIE-LAB	lab(24.36, 9.47, -32.48)
CIE-LCH	lch(24.36, 33.83, 286.26°)
OKLab	oklab(35.12% -0.0098 -0.0928)
OKLCH	oklch(35.12% 0.093 264)
XYZ	xyz(4.6943, 4.2128, 14.4728)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21386B #6B5421

analogous

#215D6B #21386B #2F216B

triadic

#21386B #6B2138 #386B21

tetradic

#21386B #6B215D #6B5421 #216B2F

square

#21386B #6B215D #6B5421 #216B2F

split-complementary

#21386B #6B2F21 #5D6B21

monochromatic

#070C17 #13203C #21386B #2F509A #426AC5

Accessibility & contrast

On white

11.40

#21386B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#21386B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21386B

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21386B	#FFFFFF	#000000	##FFFFFF
##21386B	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3E6D

Deuteranopia (green-blind)

#12376A

Tritanopia (blue-blind)

#00444C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #21386b;
/* rgb */ color: rgb(33, 56, 107);
/* oklch */ color: oklch(35.1% 0.093 264.0);

Tailwind

colors: {
  custom: {
    50: '#656e96',
    500: '#21386b',
    950: '#000000',
  },
}

SCSS

$custom: #21386b;
$custom-light: #656e96;
$custom-dark: #000000;

JSON

{
  "hex": "#21386b",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 107
  },
  "hsl": {
    "h": 221.351,
    "s": 52.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.35116,
    "c": 0.09335,
    "h": 264
  },
  "luminance": 0.04213
}

Semantic roles & 50–950 ramp

primary

#21386B

secondary

#9F8449

accent

#AF4CDC

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #21386B

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

Preview Lab → · Contrast checker → · Palette generator →