#213D8B#213D8B

#213D8B is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.134 H 265.5°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#213D8B
RGB	rgb(33, 61, 139)
HSL	hsl(224, 62%, 34%)
HSV	hsv(224, 76%, 55%)
CMYK	cmyk(76.3%, 56.1%, 0%, 45.5%)
CIE-LAB	lab(28.18, 18.70, -46.50)
CIE-LCH	lch(28.18, 50.12, 291.91°)
OKLab	oklab(38.76% -0.0105 -0.134)
OKLCH	oklch(38.76% 0.134 265.5)
XYZ	xyz(6.9545, 5.5241, 25.1208)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#213D8B #8B6F21

analogous

#21728B #213D8B #3A218B

triadic

#213D8B #8B213D #3D8B21

tetradic

#213D8B #8B2172 #8B6F21 #218B3A

square

#213D8B #8B2172 #8B6F21 #218B3A

split-complementary

#213D8B #8B3A21 #728B21

monochromatic

#0A1228 #15275A #213D8B #2D53BC #5174D6

Accessibility & contrast

On white

9.98

#213D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#213D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #213D8B

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##213D8B	#FFFFFF	#000000	##FFFFFF
##213D8B	1.00	9.98	2.11	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00488E

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #213d8b;
/* rgb */ color: rgb(33, 61, 139);
/* oklch */ color: oklch(38.8% 0.134 265.5);

Tailwind

colors: {
  custom: {
    50: '#6c72ad',
    500: '#213d8b',
    950: '#000000',
  },
}

SCSS

$custom: #213d8b;
$custom-light: #6c72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#213d8b",
  "rgb": {
    "r": 33,
    "g": 61,
    "b": 139
  },
  "hsl": {
    "h": 224.151,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38764,
    "c": 0.13439,
    "h": 265.5
  },
  "luminance": 0.05525
}

Semantic roles & 50–950 ramp

primary

#213D8B

secondary

#B99D4F

accent

#BA43E5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #213D8B

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

Preview Lab → · Contrast checker → · Palette generator →