#1B50A1#1B50A1

#1B50A1 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.5% C 0.143 H 259.1°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B50A1
RGB	rgb(27, 80, 161)
HSL	hsl(216, 71%, 37%)
HSV	hsv(216, 83%, 63%)
CMYK	cmyk(83.2%, 50.3%, 0%, 36.9%)
CIE-LAB	lab(35.09, 13.86, -48.72)
CIE-LCH	lch(35.09, 50.65, 285.88°)
OKLab	oklab(44.48% -0.0269 -0.1403)
OKLCH	oklch(44.48% 0.143 259.1)
XYZ	xyz(9.7513, 8.5423, 34.8462)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B50A1 #A16C1B

analogous

#1B93A1 #1B50A1 #291BA1

triadic

#1B50A1 #A11B50 #50A11B

tetradic

#1B50A1 #A11B93 #A16C1B #1BA129

square

#1B50A1 #A11B93 #A16C1B #1BA129

split-complementary

#1B50A1 #A1291B #93A11B

monochromatic

#091C38 #12366D #1B50A1 #246AD5 #548CE2

Accessibility & contrast

On white

7.75

#1B50A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1B50A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B50A1

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B50A1	#FFFFFF	#000000	##FFFFFF
##1B50A1	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E59A4

Deuteranopia (green-blind)

#004D9F

Tritanopia (blue-blind)

#006471

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b50a1;
/* rgb */ color: rgb(27, 80, 161);
/* oklch */ color: oklch(44.5% 0.143 259.1);

Tailwind

colors: {
  custom: {
    50: '#6f80bd',
    500: '#1b50a1',
    950: '#000000',
  },
}

SCSS

$custom: #1b50a1;
$custom-light: #6f80bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b50a1",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 161
  },
  "hsl": {
    "h": 216.269,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.44482,
    "c": 0.14281,
    "h": 259.1
  },
  "luminance": 0.08544
}

Semantic roles & 50–950 ramp

primary

#1B50A1

secondary

#C59852

accent

#A73AEE

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1B50A1

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

Preview Lab → · Contrast checker → · Palette generator →