#1B1071#1B1071

#1B1071 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.8% C 0.153 H 275.0°. Best body text is #FFFFFF at 15.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B1071
RGB	rgb(27, 16, 113)
HSL	hsl(247, 75%, 25%)
HSV	hsv(247, 86%, 44%)
CMYK	cmyk(76.1%, 85.8%, 0%, 55.7%)
CIE-LAB	lab(14.38, 37.25, -52.67)
CIE-LCH	lch(14.38, 64.51, 305.27°)
OKLab	oklab(27.85% 0.0134 -0.1523)
OKLCH	oklch(27.85% 0.153 275)
XYZ	xyz(3.6169, 1.7955, 15.7755)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1071 #667110

analogous

#103571 #1B1071 #4B1071

triadic

#1B1071 #711B10 #10711B

tetradic

#1B1071 #711035 #667110 #10714B

square

#1B1071 #711035 #667110 #10714B

split-complementary

#1B1071 #714B10 #357110

monochromatic

#06041B #0E083B #1B1071 #2818A7 #351FDC

Accessibility & contrast

On white

15.45

#1B1071 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1B1071 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1071

15.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1071	#FFFFFF	#000000	##FFFFFF
##1B1071	1.00	15.45	1.36	15.45
#FFFFFF	15.45	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002974

Deuteranopia (green-blind)

#00206F

Tritanopia (blue-blind)

#002F42

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b1071;
/* rgb */ color: rgb(27, 16, 113);
/* oklch */ color: oklch(27.8% 0.153 275.0);

Tailwind

colors: {
  custom: {
    50: '#68529b',
    500: '#1b1071',
    950: '#000000',
  },
}

SCSS

$custom: #1b1071;
$custom-light: #68529b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1071",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 113
  },
  "hsl": {
    "h": 246.804,
    "s": 75.194,
    "l": 25.294
  },
  "oklch": {
    "l": 0.27846,
    "c": 0.15287,
    "h": 275
  },
  "luminance": 0.01796
}

Semantic roles & 50–950 ramp

primary

#1B1071

secondary

#9BA934

accent

#F236DD

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B1071

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

Preview Lab → · Contrast checker → · Palette generator →