#1B2287#1B2287

#1B2287 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.9% C 0.164 H 270.4°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B2287
RGB	rgb(27, 34, 135)
HSL	hsl(236, 67%, 32%)
HSV	hsv(236, 80%, 53%)
CMYK	cmyk(80%, 74.8%, 0%, 47.1%)
CIE-LAB	lab(20.54, 34.66, -56.52)
CIE-LCH	lch(20.54, 66.30, 301.52°)
OKLab	oklab(32.95% 0.0011 -0.1637)
OKLCH	oklch(32.95% 0.164 270.4)
XYZ	xyz(5.3957, 3.1257, 23.2359)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2287 #87801B

analogous

#1B5887 #1B2287 #4A1B87

triadic

#1B2287 #871B22 #22871B

tetradic

#1B2287 #871B58 #87801B #1B874A

square

#1B2287 #871B58 #87801B #1B874A

split-complementary

#1B2287 #874A1B #58871B

monochromatic

#070821 #111554 #1B2287 #252FBA #434DD9

Accessibility & contrast

On white

12.92

#1B2287 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1B2287 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2287

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2287	#FFFFFF	#000000	##FFFFFF
##1B2287	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378A

Deuteranopia (green-blind)

#002C85

Tritanopia (blue-blind)

#003F52

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2287;
/* rgb */ color: rgb(27, 34, 135);
/* oklch */ color: oklch(32.9% 0.164 270.4);

Tailwind

colors: {
  custom: {
    50: '#6c5eab',
    500: '#1b2287',
    950: '#000000',
  },
}

SCSS

$custom: #1b2287;
$custom-light: #6c5eab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2287",
  "rgb": {
    "r": 27,
    "g": 34,
    "b": 135
  },
  "hsl": {
    "h": 236.111,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32946,
    "c": 0.16367,
    "h": 270.4
  },
  "luminance": 0.03126
}

Semantic roles & 50–950 ramp

primary

#1B2287

secondary

#BAB244

accent

#DE3EEA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B2287

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

Preview Lab → · Contrast checker → · Palette generator →