#1F50A1#1F50A1

#1F50A1 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.6% C 0.142 H 260.0°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F50A1
RGB	rgb(31, 80, 161)
HSL	hsl(217, 68%, 38%)
HSV	hsv(217, 81%, 63%)
CMYK	cmyk(80.7%, 50.3%, 0%, 36.9%)
CIE-LAB	lab(35.20, 14.26, -48.53)
CIE-LCH	lch(35.20, 50.58, 286.38°)
OKLab	oklab(44.6% -0.0246 -0.1396)
OKLCH	oklch(44.6% 0.142 260)
XYZ	xyz(9.8644, 8.6007, 34.8515)
Luminance	0.0860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F50A1 #A1701F

analogous

#1F91A1 #1F50A1 #2F1FA1

triadic

#1F50A1 #A11F50 #50A11F

tetradic

#1F50A1 #A11F91 #A1701F #1FA12F

square

#1F50A1 #A11F91 #A1701F #1FA12F

split-complementary

#1F50A1 #A12F1F #91A11F

monochromatic

#0B1D3A #15366E #1F50A1 #2969D4 #5B8DDF

Accessibility & contrast

On white

7.72

#1F50A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1F50A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F50A1

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F50A1	#FFFFFF	#000000	##FFFFFF
##1F50A1	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F59A4

Deuteranopia (green-blind)

#004D9F

Tritanopia (blue-blind)

#006471

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f50a1;
/* rgb */ color: rgb(31, 80, 161);
/* oklch */ color: oklch(44.6% 0.142 260.0);

Tailwind

colors: {
  custom: {
    50: '#7080bd',
    500: '#1f50a1',
    950: '#000000',
  },
}

SCSS

$custom: #1f50a1;
$custom-light: #7080bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f50a1",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 161
  },
  "hsl": {
    "h": 217.385,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.44604,
    "c": 0.14177,
    "h": 260
  },
  "luminance": 0.08602
}

Semantic roles & 50–950 ramp

primary

#1F50A1

secondary

#C49B58

accent

#A93DEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F50A1

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

Preview Lab → · Contrast checker → · Palette generator →