#1B27A0#1B27A0

#1B27A0 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.5% C 0.190 H 268.7°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B27A0
RGB	rgb(27, 39, 160)
HSL	hsl(235, 71%, 37%)
HSV	hsv(235, 83%, 63%)
CMYK	cmyk(83.1%, 75.6%, 0%, 37.3%)
CIE-LAB	lab(24.39, 40.56, -65.61)
CIE-LCH	lch(24.39, 77.13, 301.73°)
OKLab	oklab(36.51% -0.0044 -0.1901)
OKLCH	oklch(36.51% 0.19 268.7)
XYZ	xyz(7.5205, 4.2212, 33.6693)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B27A0 #A0941B

analogous

#1B6AA0 #1B27A0 #511BA0

triadic

#1B27A0 #A01B27 #27A01B

tetradic

#1B27A0 #A01B6A #A0941B #1BA051

square

#1B27A0 #A01B6A #A0941B #1BA051

split-complementary

#1B27A0 #A0511B #6AA01B

monochromatic

#090D37 #121A6C #1B27A0 #2434D4 #5360E2

Accessibility & contrast

On white

11.39

#1B27A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1B27A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B27A0

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B27A0	#FFFFFF	#000000	##FFFFFF
##1B27A0	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A4

Deuteranopia (green-blind)

#00339E

Tritanopia (blue-blind)

#004B62

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b27a0;
/* rgb */ color: rgb(27, 39, 160);
/* oklch */ color: oklch(36.5% 0.190 268.7);

Tailwind

colors: {
  custom: {
    50: '#7262bd',
    500: '#1b27a0',
    950: '#000000',
  },
}

SCSS

$custom: #1b27a0;
$custom-light: #7262bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b27a0",
  "rgb": {
    "r": 27,
    "g": 39,
    "b": 160
  },
  "hsl": {
    "h": 234.586,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.3651,
    "c": 0.19017,
    "h": 268.7
  },
  "luminance": 0.04222
}

Semantic roles & 50–950 ramp

primary

#1B27A0

secondary

#C5BB52

accent

#DE3AEE

background

#F7F5FB

surface

#EEEAF7

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1B27A0

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

Preview Lab → · Contrast checker → · Palette generator →