#1B218F#1B218F

#1B218F is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.175 H 270.1°. Best body text is #FFFFFF at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B218F
RGB	rgb(27, 33, 143)
HSL	hsl(237, 68%, 33%)
HSV	hsv(237, 81%, 56%)
CMYK	cmyk(81.1%, 76.9%, 0%, 43.9%)
CIE-LAB	lab(21.22, 38.13, -60.39)
CIE-LCH	lch(21.22, 71.42, 302.26°)
OKLab	oklab(33.69% 0.0002 -0.1749)
OKLCH	oklch(33.69% 0.175 270.1)
XYZ	xyz(5.9521, 3.3032, 26.3052)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B218F #8F891B

analogous

#1B5B8F #1B218F #4F1B8F

triadic

#1B218F #8F1B21 #218F1B

tetradic

#1B218F #8F1B5B #8F891B #1B8F4F

square

#1B218F #8F1B5B #8F891B #1B8F4F

split-complementary

#1B218F #8F4F1B #5B8F1B

monochromatic

#080928 #11155C #1B218F #252DC2 #4850DC

Accessibility & contrast

On white

12.64

#1B218F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1B218F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B218F

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B218F	#FFFFFF	#000000	##FFFFFF
##1B218F	1.00	12.64	1.66	12.64
#FFFFFF	12.64	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003992

Deuteranopia (green-blind)

#002D8D

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b218f;
/* rgb */ color: rgb(27, 33, 143);
/* oklch */ color: oklch(33.7% 0.175 270.1);

Tailwind

colors: {
  custom: {
    50: '#6e5eb1',
    500: '#1b218f',
    950: '#000000',
  },
}

SCSS

$custom: #1b218f;
$custom-light: #6e5eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b218f",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 143
  },
  "hsl": {
    "h": 236.897,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33694,
    "c": 0.17493,
    "h": 270.1
  },
  "luminance": 0.03304
}

Semantic roles & 50–950 ramp

primary

#1B218F

secondary

#BEB848

accent

#E23DEB

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1B218F

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

Preview Lab → · Contrast checker → · Palette generator →