#213FBC#213FBC

#213FBC is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.198 H 266.7°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#213FBC
RGB	rgb(33, 63, 188)
HSL	hsl(228, 70%, 43%)
HSV	hsv(228, 82%, 74%)
CMYK	cmyk(82.4%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(32.94, 36.21, -68.28)
CIE-LCH	lch(32.94, 77.29, 297.94°)
OKLab	oklab(43.61% -0.0114 -0.1978)
OKLCH	oklch(43.61% 0.198 266.7)
XYZ	xyz(11.4786, 7.5078, 48.4114)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.17

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#213FBC #BC9E21

analogous

#218CBC #213FBC #5021BC

triadic

#213FBC #BC213F #3FBC21

tetradic

#213FBC #BC218C #BC9E21 #21BC50

square

#213FBC #BC218C #BC9E21 #21BC50

split-complementary

#213FBC #BC5021 #8CBC21

monochromatic

#0F1C54 #182E88 #213FBC #3D5CDD #7188E6

Accessibility & contrast

On white

8.39

#213FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#213FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #213FBC

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##213FBC	#FFFFFF	#000000	##FFFFFF
##213FBC	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C0

Deuteranopia (green-blind)

#0046BA

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #213fbc;
/* rgb */ color: rgb(33, 63, 188);
/* oklch */ color: oklch(43.6% 0.198 266.7);

Tailwind

colors: {
  custom: {
    50: '#7974d1',
    500: '#213fbc',
    950: '#000000',
  },
}

SCSS

$custom: #213fbc;
$custom-light: #7974d1;
$custom-dark: #000000;

JSON

{
  "hex": "#213fbc",
  "rgb": {
    "r": 33,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 228.387,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.43607,
    "c": 0.19813,
    "h": 266.7
  },
  "luminance": 0.07509
}

Semantic roles & 50–950 ramp

primary

#213FBC

secondary

#CDBA6C

accent

#CA3BED

background

#F8F7FD

surface

#EFEDFA

border

#CAC8D3

text

#0B0814

muted

#7C7B83

Preview Lab

Preview with #213FBC

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

Preview Lab → · Contrast checker → · Palette generator →