#1B1070#1B1070

#1B1070 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.7% C 0.152 H 275.2°. Best body text is #FFFFFF at 15.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B1070
RGB	rgb(27, 16, 112)
HSL	hsl(247, 75%, 25%)
HSV	hsv(247, 86%, 44%)
CMYK	cmyk(75.9%, 85.7%, 0%, 56.1%)
CIE-LAB	lab(14.25, 36.93, -52.23)
CIE-LCH	lch(14.25, 63.97, 305.26°)
OKLab	oklab(27.72% 0.0137 -0.151)
OKLCH	oklch(27.72% 0.152 275.2)
XYZ	xyz(3.5610, 1.7731, 15.4807)
Luminance	0.0177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1070 #657010

analogous

#103570 #1B1070 #4B1070

triadic

#1B1070 #701B10 #10701B

tetradic

#1B1070 #701035 #657010 #10704B

square

#1B1070 #701035 #657010 #10704B

split-complementary

#1B1070 #704B10 #357010

monochromatic

#06041B #0E083A #1B1070 #2818A6 #351FDB

Accessibility & contrast

On white

15.50

#1B1070 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#1B1070 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1070

15.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1070	#FFFFFF	#000000	##FFFFFF
##1B1070	1.00	15.50	1.35	15.50
#FFFFFF	15.50	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002873

Deuteranopia (green-blind)

#00206E

Tritanopia (blue-blind)

#002F41

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b1070;
/* rgb */ color: rgb(27, 16, 112);
/* oklch */ color: oklch(27.7% 0.152 275.2);

Tailwind

colors: {
  custom: {
    50: '#67529a',
    500: '#1b1070',
    950: '#000000',
  },
}

SCSS

$custom: #1b1070;
$custom-light: #67529a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1070",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 112
  },
  "hsl": {
    "h": 246.875,
    "s": 75,
    "l": 25.098
  },
  "oklch": {
    "l": 0.27722,
    "c": 0.15163,
    "h": 275.2
  },
  "luminance": 0.01773
}

Semantic roles & 50–950 ramp

primary

#1B1070

secondary

#9AA834

accent

#F236DC

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B1070

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

Preview Lab → · Contrast checker → · Palette generator →