#1B2F82#1B2F82

#1B2F82 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.8% C 0.142 H 267.7°. Best body text is #FFFFFF at 11.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F82
RGB	rgb(27, 47, 130)
HSL	hsl(228, 66%, 31%)
HSV	hsv(228, 79%, 51%)
CMYK	cmyk(79.2%, 63.8%, 0%, 49%)
CIE-LAB	lab(23.26, 24.12, -48.90)
CIE-LCH	lch(23.26, 54.53, 296.26°)
OKLab	oklab(34.78% -0.0057 -0.1414)
OKLCH	oklch(34.78% 0.142 267.7)
XYZ	xyz(5.4964, 3.8771, 21.5735)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F82 #826E1B

analogous

#1B6282 #1B2F82 #3B1B82

triadic

#1B2F82 #821B2F #2F821B

tetradic

#1B2F82 #821B62 #826E1B #1B823B

square

#1B2F82 #821B62 #826E1B #1B823B

split-complementary

#1B2F82 #823B1B #62821B

monochromatic

#060A1D #101D4F #1B2F82 #2641B5 #405DD7

Accessibility & contrast

On white

11.83

#1B2F82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B2F82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F82

11.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F82	#FFFFFF	#000000	##FFFFFF
##1B2F82	1.00	11.83	1.78	11.83
#FFFFFF	11.83	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C85

Deuteranopia (green-blind)

#003380

Tritanopia (blue-blind)

#004453

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2f82;
/* rgb */ color: rgb(27, 47, 130);
/* oklch */ color: oklch(34.8% 0.142 267.7);

Tailwind

colors: {
  custom: {
    50: '#6967a7',
    500: '#1b2f82',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f82;
$custom-light: #6967a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f82",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 130
  },
  "hsl": {
    "h": 228.35,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.34775,
    "c": 0.14151,
    "h": 267.7
  },
  "luminance": 0.03878
}

Semantic roles & 50–950 ramp

primary

#1B2F82

secondary

#B69F43

accent

#C83FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1B2F82

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

Preview Lab → · Contrast checker → · Palette generator →