#212F9B#212F9B

#212F9B is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.5% C 0.174 H 269.5°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#212F9B
RGB	rgb(33, 47, 155)
HSL	hsl(233, 65%, 37%)
HSV	hsv(233, 79%, 61%)
CMYK	cmyk(78.7%, 69.7%, 0%, 39.2%)
CIE-LAB	lab(25.93, 34.29, -60.01)
CIE-LCH	lch(25.93, 69.11, 299.74°)
OKLab	oklab(37.54% -0.0014 -0.1737)
OKLCH	oklch(37.54% 0.174 269.5)
XYZ	xyz(7.5581, 4.7221, 31.5171)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#212F9B #9B8D21

analogous

#216C9B #212F9B #50219B

triadic

#212F9B #9B212F #2F9B21

tetradic

#212F9B #9B216C #9B8D21 #219B50

square

#212F9B #9B216C #9B8D21 #219B50

split-complementary

#212F9B #9B5021 #6C9B21

monochromatic

#0C1036 #162069 #212F9B #2C3ECD #5A69DC

Accessibility & contrast

On white

10.80

#212F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#212F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #212F9B

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##212F9B	#FFFFFF	#000000	##FFFFFF
##212F9B	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00439E

Deuteranopia (green-blind)

#003899

Tritanopia (blue-blind)

#004D61

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #212f9b;
/* rgb */ color: rgb(33, 47, 155);
/* oklch */ color: oklch(37.5% 0.174 269.5);

Tailwind

colors: {
  custom: {
    50: '#7268ba',
    500: '#212f9b',
    950: '#000000',
  },
}

SCSS

$custom: #212f9b;
$custom-light: #7268ba;
$custom-dark: #000000;

JSON

{
  "hex": "#212f9b",
  "rgb": {
    "r": 33,
    "g": 47,
    "b": 155
  },
  "hsl": {
    "h": 233.115,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.37535,
    "c": 0.17375,
    "h": 269.5
  },
  "luminance": 0.04723
}

Semantic roles & 50–950 ramp

primary

#212F9B

secondary

#C0B458

accent

#D540E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #212F9B

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

Preview Lab → · Contrast checker → · Palette generator →