#213F8B#213F8B

#213F8B is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.132 H 264.7°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#213F8B
RGB	rgb(33, 63, 139)
HSL	hsl(223, 62%, 34%)
HSV	hsv(223, 76%, 55%)
CMYK	cmyk(76.3%, 54.7%, 0%, 45.5%)
CIE-LAB	lab(28.75, 17.32, -45.57)
CIE-LCH	lch(28.75, 48.75, 290.81°)
OKLab	oklab(39.2% -0.0121 -0.1312)
OKLCH	oklch(39.2% 0.132 264.7)
XYZ	xyz(7.0633, 5.7417, 25.1571)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#213F8B #8B6D21

analogous

#21748B #213F8B #38218B

triadic

#213F8B #8B213F #3F8B21

tetradic

#213F8B #8B2174 #8B6D21 #218B38

square

#213F8B #8B2174 #8B6D21 #218B38

split-complementary

#213F8B #8B3821 #748B21

monochromatic

#0A1228 #15295A #213F8B #2D55BC #5176D6

Accessibility & contrast

On white

9.77

#213F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#213F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #213F8B

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##213F8B	#FFFFFF	#000000	##FFFFFF
##213F8B	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06498E

Deuteranopia (green-blind)

#003F89

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #213f8b;
/* rgb */ color: rgb(33, 63, 139);
/* oklch */ color: oklch(39.2% 0.132 264.7);

Tailwind

colors: {
  custom: {
    50: '#6c73ad',
    500: '#213f8b',
    950: '#000000',
  },
}

SCSS

$custom: #213f8b;
$custom-light: #6c73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#213f8b",
  "rgb": {
    "r": 33,
    "g": 63,
    "b": 139
  },
  "hsl": {
    "h": 223.019,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.39197,
    "c": 0.13177,
    "h": 264.7
  },
  "luminance": 0.05742
}

Semantic roles & 50–950 ramp

primary

#213F8B

secondary

#B99B4F

accent

#B743E5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #213F8B

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

Preview Lab → · Contrast checker → · Palette generator →