#1B1EA1#1B1EA1

#1B1EA1 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.4% C 0.200 H 269.4°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B1EA1
RGB	rgb(27, 30, 161)
HSL	hsl(239, 71%, 37%)
HSV	hsv(239, 83%, 63%)
CMYK	cmyk(83.2%, 81.4%, 0%, 36.9%)
CIE-LAB	lab(22.77, 45.87, -68.90)
CIE-LCH	lch(22.77, 82.77, 303.66°)
OKLab	oklab(35.4% -0.0022 -0.1995)
OKLCH	oklch(35.4% 0.2 269.4)
XYZ	xyz(7.3471, 3.7339, 34.0448)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1EA1 #A19E1B

analogous

#1B61A1 #1B1EA1 #5B1BA1

triadic

#1B1EA1 #A11B1E #1EA11B

tetradic

#1B1EA1 #A11B61 #A19E1B #1BA15B

square

#1B1EA1 #A11B61 #A19E1B #1BA15B

split-complementary

#1B1EA1 #A15B1B #61A11B

monochromatic

#090A38 #12146D #1B1EA1 #2428D5 #5457E2

Accessibility & contrast

On white

12.02

#1B1EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B1EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1EA1

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1EA1	#FFFFFF	#000000	##FFFFFF
##1B1EA1	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA5

Deuteranopia (green-blind)

#002F9F

Tritanopia (blue-blind)

#004760

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b1ea1;
/* rgb */ color: rgb(27, 30, 161);
/* oklch */ color: oklch(35.4% 0.200 269.4);

Tailwind

colors: {
  custom: {
    50: '#735dbe',
    500: '#1b1ea1',
    950: '#000000',
  },
}

SCSS

$custom: #1b1ea1;
$custom-light: #735dbe;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1ea1",
  "rgb": {
    "r": 27,
    "g": 30,
    "b": 161
  },
  "hsl": {
    "h": 238.657,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.35404,
    "c": 0.19955,
    "h": 269.4
  },
  "luminance": 0.03735
}

Semantic roles & 50–950 ramp

primary

#1B1EA1

secondary

#C5C352

accent

#EA3AEE

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B1EA1

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

Preview Lab → · Contrast checker → · Palette generator →