#21358B#21358B

#21358B is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.1% C 0.145 H 268.3°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#21358B
RGB	rgb(33, 53, 139)
HSL	hsl(229, 62%, 34%)
HSV	hsv(229, 76%, 55%)
CMYK	cmyk(76.3%, 61.9%, 0%, 45.5%)
CIE-LAB	lab(25.96, 24.22, -50.11)
CIE-LCH	lch(25.96, 55.65, 295.80°)
OKLab	oklab(37.1% -0.0043 -0.1447)
OKLCH	oklch(37.1% 0.145 268.3)
XYZ	xyz(6.5589, 4.7329, 24.9890)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21358B #8B7721

analogous

#216A8B #21358B #42218B

triadic

#21358B #8B2135 #358B21

tetradic

#21358B #8B216A #8B7721 #218B42

square

#21358B #8B216A #8B7721 #218B42

split-complementary

#21358B #8B4221 #6A8B21

monochromatic

#0A0F28 #15225A #21358B #2D48BC #516AD6

Accessibility & contrast

On white

10.79

#21358B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#21358B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21358B

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21358B	#FFFFFF	#000000	##FFFFFF
##21358B	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)

#00438E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #21358b;
/* rgb */ color: rgb(33, 53, 139);
/* oklch */ color: oklch(37.1% 0.145 268.3);

Tailwind

colors: {
  custom: {
    50: '#6d6cae',
    500: '#21358b',
    950: '#000000',
  },
}

SCSS

$custom: #21358b;
$custom-light: #6d6cae;
$custom-dark: #000000;

JSON

{
  "hex": "#21358b",
  "rgb": {
    "r": 33,
    "g": 53,
    "b": 139
  },
  "hsl": {
    "h": 228.679,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.37103,
    "c": 0.14477,
    "h": 268.3
  },
  "luminance": 0.04734
}

Semantic roles & 50–950 ramp

primary

#21358B

secondary

#B9A54F

accent

#C643E5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #21358B

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

Preview Lab → · Contrast checker → · Palette generator →