#1B2B82#1B2B82

#1B2B82 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.0% C 0.147 H 268.8°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B82
RGB	rgb(27, 43, 130)
HSL	hsl(231, 66%, 31%)
HSV	hsv(231, 79%, 51%)
CMYK	cmyk(79.2%, 66.9%, 0%, 49%)
CIE-LAB	lab(22.20, 26.88, -50.64)
CIE-LCH	lch(22.20, 57.33, 297.96°)
OKLab	oklab(33.99% -0.0031 -0.1465)
OKLCH	oklch(33.99% 0.147 268.8)
XYZ	xyz(5.3437, 3.5719, 21.5226)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B82 #82721B

analogous

#1B5E82 #1B2B82 #3F1B82

triadic

#1B2B82 #821B2B #2B821B

tetradic

#1B2B82 #821B5E #82721B #1B823F

square

#1B2B82 #821B5E #82721B #1B823F

split-complementary

#1B2B82 #823F1B #5E821B

monochromatic

#06091D #101A4F #1B2B82 #263CB5 #4058D7

Accessibility & contrast

On white

12.25

#1B2B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B2B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B82

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B82	#FFFFFF	#000000	##FFFFFF
##1B2B82	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A85

Deuteranopia (green-blind)

#003080

Tritanopia (blue-blind)

#004252

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2b82;
/* rgb */ color: rgb(27, 43, 130);
/* oklch */ color: oklch(34.0% 0.147 268.8);

Tailwind

colors: {
  custom: {
    50: '#6a64a7',
    500: '#1b2b82',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b82;
$custom-light: #6a64a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b82",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 130
  },
  "hsl": {
    "h": 230.68,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33995,
    "c": 0.14653,
    "h": 268.8
  },
  "luminance": 0.03572
}

Semantic roles & 50–950 ramp

primary

#1B2B82

secondary

#B6A443

accent

#CE3FE9

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#070510

muted

#7A797F

Preview Lab

Preview with #1B2B82

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

Preview Lab → · Contrast checker → · Palette generator →