#1B41A0#1B41A0

#1B41A0 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.2% C 0.160 H 264.0°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#1B41A0
RGB	rgb(27, 65, 160)
HSL	hsl(223, 71%, 37%)
HSV	hsv(223, 83%, 63%)
CMYK	cmyk(83.1%, 59.4%, 0%, 37.3%)
CIE-LAB	lab(30.76, 23.65, -55.14)
CIE-LCH	lch(30.76, 60.00, 293.22°)
OKLab	oklab(41.18% -0.0167 -0.1594)
OKLCH	oklch(41.18% 0.16 264)
XYZ	xyz(8.6852, 6.5506, 34.0575)
Luminance	0.0655 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B41A0 #A07A1B

analogous

#1B84A0 #1B41A0 #381BA0

triadic

#1B41A0 #A01B41 #41A01B

tetradic

#1B41A0 #A01B84 #A07A1B #1BA038

square

#1B41A0 #A01B84 #A07A1B #1BA038

split-complementary

#1B41A0 #A0381B #84A01B

monochromatic

#091637 #122C6C #1B41A0 #2456D4 #537CE2

Accessibility & contrast

On white

9.09

#1B41A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B41A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B41A0

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B41A0	#FFFFFF	#000000	##FFFFFF
##1B41A0	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA3

Deuteranopia (green-blind)

#00429E

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b41a0;
/* rgb */ color: rgb(27, 65, 160);
/* oklch */ color: oklch(41.2% 0.160 264.0);

Tailwind

colors: {
  custom: {
    50: '#7075bd',
    500: '#1b41a0',
    950: '#000000',
  },
}

SCSS

$custom: #1b41a0;
$custom-light: #7075bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b41a0",
  "rgb": {
    "r": 27,
    "g": 65,
    "b": 160
  },
  "hsl": {
    "h": 222.857,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.41175,
    "c": 0.16028,
    "h": 264
  },
  "luminance": 0.06552
}

Semantic roles & 50–950 ramp

primary

#1B41A0

secondary

#C5A452

accent

#BA3AEE

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B41A0

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

Preview Lab → · Contrast checker → · Palette generator →