#213F9B#213F9B

#213F9B is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.154 H 265.9°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#213F9B
RGB	rgb(33, 63, 155)
HSL	hsl(225, 65%, 37%)
HSV	hsv(225, 79%, 61%)
CMYK	cmyk(78.7%, 59.4%, 0%, 39.2%)
CIE-LAB	lab(30.02, 23.64, -53.31)
CIE-LCH	lch(30.02, 58.31, 293.91°)
OKLab	oklab(40.55% -0.0111 -0.154)
OKLCH	oklch(40.55% 0.154 265.9)
XYZ	xyz(8.3190, 6.2440, 31.7708)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#213F9B #9B7D21

analogous

#217C9B #213F9B #40219B

triadic

#213F9B #9B213F #3F9B21

tetradic

#213F9B #9B217C #9B7D21 #219B40

square

#213F9B #9B217C #9B7D21 #219B40

split-complementary

#213F9B #9B4021 #7C9B21

monochromatic

#0C1636 #162A69 #213F9B #2C54CD #5A7ADC

Accessibility & contrast

On white

9.34

#213F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#213F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #213F9B

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##213F9B	#FFFFFF	#000000	##FFFFFF
##213F9B	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #213f9b;
/* rgb */ color: rgb(33, 63, 155);
/* oklch */ color: oklch(40.6% 0.154 265.9);

Tailwind

colors: {
  custom: {
    50: '#7073b9',
    500: '#213f9b',
    950: '#000000',
  },
}

SCSS

$custom: #213f9b;
$custom-light: #7073b9;
$custom-dark: #000000;

JSON

{
  "hex": "#213f9b",
  "rgb": {
    "r": 33,
    "g": 63,
    "b": 155
  },
  "hsl": {
    "h": 225.246,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.40551,
    "c": 0.15437,
    "h": 265.9
  },
  "luminance": 0.06245
}

Semantic roles & 50–950 ramp

primary

#213F9B

secondary

#C0A658

accent

#BF40E8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #213F9B

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

Preview Lab → · Contrast checker → · Palette generator →