#1B1E71#1B1E71

#1B1E71 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 29.9% C 0.139 H 272.7°. Best body text is #FFFFFF at 14.28:1 contrast (WCAG AA passes).

Color values

HEX	#1B1E71
RGB	rgb(27, 30, 113)
HSL	hsl(238, 61%, 27%)
HSV	hsv(238, 76%, 44%)
CMYK	cmyk(76.1%, 73.5%, 0%, 55.7%)
CIE-LAB	lab(17.24, 29.11, -47.94)
CIE-LCH	lch(17.24, 56.08, 301.27°)
OKLab	oklab(29.87% 0.0065 -0.1387)
OKLCH	oklch(29.87% 0.139 272.7)
XYZ	xyz(3.8959, 2.3534, 15.8685)
Luminance	0.0235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1E71 #716E1B

analogous

#1B4971 #1B1E71 #431B71

triadic

#1B1E71 #711B1E #1E711B

tetradic

#1B1E71 #711B49 #716E1B #1B7143

square

#1B1E71 #711B49 #716E1B #1B7143

split-complementary

#1B1E71 #71431B #49711B

monochromatic

#060719 #0F1140 #1B1E71 #272BA2 #373CCF

Accessibility & contrast

On white

14.28

#1B1E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1B1E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1E71

14.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1E71	#FFFFFF	#000000	##FFFFFF
##1B1E71	1.00	14.28	1.47	14.28
#FFFFFF	14.28	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E74

Deuteranopia (green-blind)

#00266F

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1b1e71;
/* rgb */ color: rgb(27, 30, 113);
/* oklch */ color: oklch(29.9% 0.139 272.7);

Tailwind

colors: {
  custom: {
    50: '#665a9b',
    500: '#1b1e71',
    950: '#000000',
  },
}

SCSS

$custom: #1b1e71;
$custom-light: #665a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1e71",
  "rgb": {
    "r": 27,
    "g": 30,
    "b": 113
  },
  "hsl": {
    "h": 237.907,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29869,
    "c": 0.13881,
    "h": 272.7
  },
  "luminance": 0.02354
}

Semantic roles & 50–950 ramp

primary

#1B1E71

secondary

#A6A242

accent

#DF43E5

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B1E71

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

Preview Lab → · Contrast checker → · Palette generator →