#1B1670#1B1670

#1B1670 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.5% C 0.146 H 274.3°. Best body text is #FFFFFF at 15.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B1670
RGB	rgb(27, 22, 112)
HSL	hsl(243, 67%, 26%)
HSV	hsv(243, 80%, 44%)
CMYK	cmyk(75.9%, 80.4%, 0%, 56.1%)
CIE-LAB	lab(15.36, 33.70, -50.39)
CIE-LCH	lch(15.36, 60.62, 303.78°)
OKLab	oklab(28.5% 0.0111 -0.1457)
OKLCH	oklch(28.5% 0.146 274.3)
XYZ	xyz(3.6626, 1.9763, 15.5145)
Luminance	0.0198 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1670 #6B7016

analogous

#163E70 #1B1670 #481670

triadic

#1B1670 #701B16 #16701B

tetradic

#1B1670 #70163E #6B7016 #167048

square

#1B1670 #70163E #6B7016 #167048

split-complementary

#1B1670 #704816 #3E7016

monochromatic

#06051A #0F0C3D #1B1670 #2720A3 #342BD5

Accessibility & contrast

On white

15.05

#1B1670 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1B1670 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1670

15.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1670	#FFFFFF	#000000	##FFFFFF
##1B1670	1.00	15.05	1.40	15.05
#FFFFFF	15.05	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A73

Deuteranopia (green-blind)

#00226E

Tritanopia (blue-blind)

#003142

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b1670;
/* rgb */ color: rgb(27, 22, 112);
/* oklch */ color: oklch(28.5% 0.146 274.3);

Tailwind

colors: {
  custom: {
    50: '#67559a',
    500: '#1b1670',
    950: '#000000',
  },
}

SCSS

$custom: #1b1670;
$custom-light: #67559a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1670",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 112
  },
  "hsl": {
    "h": 243.333,
    "s": 67.164,
    "l": 26.275
  },
  "oklch": {
    "l": 0.28498,
    "c": 0.14617,
    "h": 274.3
  },
  "luminance": 0.01977
}

Semantic roles & 50–950 ramp

primary

#1B1670

secondary

#A0A63C

accent

#EA3EE0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B1670

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

Preview Lab → · Contrast checker → · Palette generator →