#1B2187#1B2187

#1B2187 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.8% C 0.165 H 270.5°. Best body text is #FFFFFF at 13.01:1 contrast (WCAG AA passes).

Color values

HEX	#1B2187
RGB	rgb(27, 33, 135)
HSL	hsl(237, 67%, 32%)
HSV	hsv(237, 80%, 53%)
CMYK	cmyk(80%, 75.6%, 0%, 47.1%)
CIE-LAB	lab(20.32, 35.28, -56.88)
CIE-LCH	lch(20.32, 66.93, 301.81°)
OKLab	oklab(32.79% 0.0015 -0.1647)
OKLCH	oklch(32.79% 0.165 270.5)
XYZ	xyz(5.3675, 3.0694, 23.2265)
Luminance	0.0307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2187 #87811B

analogous

#1B5787 #1B2187 #4B1B87

triadic

#1B2187 #871B21 #21871B

tetradic

#1B2187 #871B57 #87811B #1B874B

square

#1B2187 #871B57 #87811B #1B874B

split-complementary

#1B2187 #874B1B #57871B

monochromatic

#070821 #111554 #1B2187 #252DBA #434BD9

Accessibility & contrast

On white

13.01

#1B2187 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1B2187 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2187

13.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2187	#FFFFFF	#000000	##FFFFFF
##1B2187	1.00	13.01	1.61	13.01
#FFFFFF	13.01	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368A

Deuteranopia (green-blind)

#002C85

Tritanopia (blue-blind)

#003F52

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2187;
/* rgb */ color: rgb(27, 33, 135);
/* oklch */ color: oklch(32.8% 0.165 270.5);

Tailwind

colors: {
  custom: {
    50: '#6c5dab',
    500: '#1b2187',
    950: '#000000',
  },
}

SCSS

$custom: #1b2187;
$custom-light: #6c5dab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2187",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 135
  },
  "hsl": {
    "h": 236.667,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32788,
    "c": 0.16473,
    "h": 270.5
  },
  "luminance": 0.0307
}

Semantic roles & 50–950 ramp

primary

#1B2187

secondary

#BAB444

accent

#E03EEA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B2187

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

Preview Lab → · Contrast checker → · Palette generator →