#1F50A4#1F50A4

#1F50A4 is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.8% C 0.146 H 260.5°. Best body text is #FFFFFF at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F50A4
RGB	rgb(31, 80, 164)
HSL	hsl(218, 68%, 38%)
HSV	hsv(218, 81%, 64%)
CMYK	cmyk(81.1%, 51.2%, 0%, 35.7%)
CIE-LAB	lab(35.42, 15.46, -49.98)
CIE-LCH	lch(35.42, 52.32, 287.19°)
OKLab	oklab(44.83% -0.0241 -0.1439)
OKLCH	oklch(44.83% 0.146 260.5)
XYZ	xyz(10.1321, 8.7078, 36.2615)
Luminance	0.0871 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F50A4 #A4731F

analogous

#1F92A4 #1F50A4 #311FA4

triadic

#1F50A4 #A41F50 #50A41F

tetradic

#1F50A4 #A41F92 #A4731F #1FA431

square

#1F50A4 #A41F92 #A4731F #1FA431

split-complementary

#1F50A4 #A4311F #92A41F

monochromatic

#0C1E3D #153771 #1F50A4 #2A69D7 #5D8DE0

Accessibility & contrast

On white

7.66

#1F50A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#1F50A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F50A4

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F50A4	#FFFFFF	#000000	##FFFFFF
##1F50A4	1.00	7.66	2.74	7.66
#FFFFFF	7.66	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A5AA7

Deuteranopia (green-blind)

#004EA2

Tritanopia (blue-blind)

#006472

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f50a4;
/* rgb */ color: rgb(31, 80, 164);
/* oklch */ color: oklch(44.8% 0.146 260.5);

Tailwind

colors: {
  custom: {
    50: '#7180c0',
    500: '#1f50a4',
    950: '#000000',
  },
}

SCSS

$custom: #1f50a4;
$custom-light: #7180c0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f50a4",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 164
  },
  "hsl": {
    "h": 217.895,
    "s": 68.205,
    "l": 38.235
  },
  "oklch": {
    "l": 0.44833,
    "c": 0.14592,
    "h": 260.5
  },
  "luminance": 0.08709
}

Semantic roles & 50–950 ramp

primary

#1F50A4

secondary

#C59D5A

accent

#AB3DEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F50A4

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

Preview Lab → · Contrast checker → · Palette generator →