#1B2180#1B2180

#1B2180 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.0% C 0.156 H 271.0°. Best body text is #FFFFFF at 13.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B2180
RGB	rgb(27, 33, 128)
HSL	hsl(236, 65%, 30%)
HSV	hsv(236, 79%, 50%)
CMYK	cmyk(78.9%, 74.2%, 0%, 49.8%)
CIE-LAB	lab(19.55, 32.73, -53.73)
CIE-LCH	lch(19.55, 62.92, 301.35°)
OKLab	oklab(32.01% 0.0026 -0.1556)
OKLCH	oklch(32.01% 0.156 271)
XYZ	xyz(4.8908, 2.8787, 20.7158)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2180 #807A1B

analogous

#1B5380 #1B2180 #481B80

triadic

#1B2180 #801B21 #21801B

tetradic

#1B2180 #801B53 #807A1B #1B8048

square

#1B2180 #801B53 #807A1B #1B8048

split-complementary

#1B2180 #80481B #53801B

monochromatic

#06071B #10144D #1B2180 #262EB3 #3F48D6

Accessibility & contrast

On white

13.33

#1B2180 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1B2180 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2180

13.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2180	#FFFFFF	#000000	##FFFFFF
##1B2180	1.00	13.33	1.58	13.33
#FFFFFF	13.33	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003483

Deuteranopia (green-blind)

#002A7E

Tritanopia (blue-blind)

#003C4E

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2180;
/* rgb */ color: rgb(27, 33, 128);
/* oklch */ color: oklch(32.0% 0.156 271.0);

Tailwind

colors: {
  custom: {
    50: '#6a5da6',
    500: '#1b2180',
    950: '#000000',
  },
}

SCSS

$custom: #1b2180;
$custom-light: #6a5da6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2180",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 128
  },
  "hsl": {
    "h": 236.436,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3201,
    "c": 0.15559,
    "h": 271
  },
  "luminance": 0.02879
}

Semantic roles & 50–950 ramp

primary

#1B2180

secondary

#B4AD43

accent

#DE40E8

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1B2180

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

Preview Lab → · Contrast checker → · Palette generator →