#21388A#21388A

#21388A is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.139 H 267.3°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#21388A
RGB	rgb(33, 56, 138)
HSL	hsl(227, 61%, 34%)
HSV	hsv(227, 76%, 54%)
CMYK	cmyk(76.1%, 59.4%, 0%, 45.9%)
CIE-LAB	lab(26.69, 21.77, -48.29)
CIE-LCH	lch(26.69, 52.97, 294.26°)
OKLab	oklab(37.62% -0.0066 -0.1393)
OKLCH	oklch(37.62% 0.139 267.3)
XYZ	xyz(6.6272, 4.9859, 24.6529)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21388A #8A7321

analogous

#216C8A #21388A #3E218A

triadic

#21388A #8A2138 #388A21

tetradic

#21388A #8A216C #8A7321 #218A3E

square

#21388A #8A216C #8A7321 #218A3E

split-complementary

#21388A #8A3E21 #6C8A21

monochromatic

#091027 #152459 #21388A #2D4CBB #506DD5

Accessibility & contrast

On white

10.51

#21388A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#21388A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21388A

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21388A	#FFFFFF	#000000	##FFFFFF
##21388A	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448D

Deuteranopia (green-blind)

#003A88

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #21388a;
/* rgb */ color: rgb(33, 56, 138);
/* oklch */ color: oklch(37.6% 0.139 267.3);

Tailwind

colors: {
  custom: {
    50: '#6d6ead',
    500: '#21388a',
    950: '#000000',
  },
}

SCSS

$custom: #21388a;
$custom-light: #6d6ead;
$custom-dark: #000000;

JSON

{
  "hex": "#21388a",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 138
  },
  "hsl": {
    "h": 226.857,
    "s": 61.404,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37624,
    "c": 0.13948,
    "h": 267.3
  },
  "luminance": 0.04987
}

Semantic roles & 50–950 ramp

primary

#21388A

secondary

#B9A14E

accent

#C143E5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #21388A

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

Preview Lab → · Contrast checker → · Palette generator →