#1F509A#1F509A

#1F509A is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.1% C 0.132 H 258.8°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#1F509A
RGB	rgb(31, 80, 154)
HSL	hsl(216, 66%, 36%)
HSV	hsv(216, 80%, 60%)
CMYK	cmyk(79.9%, 48.1%, 0%, 39.6%)
CIE-LAB	lab(34.72, 11.47, -45.09)
CIE-LCH	lch(34.72, 46.53, 284.28°)
OKLab	oklab(44.08% -0.0257 -0.1295)
OKLCH	oklch(44.08% 0.132 258.8)
XYZ	xyz(9.2643, 8.3606, 31.6911)
Luminance	0.0836 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F509A #9A691F

analogous

#1F8E9A #1F509A #2C1F9A

triadic

#1F509A #9A1F50 #509A1F

tetradic

#1F509A #9A1F8E #9A691F #1F9A2C

square

#1F509A #9A1F8E #9A691F #1F9A2C

split-complementary

#1F509A #9A2C1F #8E9A1F

monochromatic

#0A1B34 #153667 #1F509A #296ACD #568CDD

Accessibility & contrast

On white

7.86

#1F509A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1F509A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F509A

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F509A	#FFFFFF	#000000	##FFFFFF
##1F509A	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27589D

Deuteranopia (green-blind)

#014C99

Tritanopia (blue-blind)

#00626D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f509a;
/* rgb */ color: rgb(31, 80, 154);
/* oklch */ color: oklch(44.1% 0.132 258.8);

Tailwind

colors: {
  custom: {
    50: '#6f80b8',
    500: '#1f509a',
    950: '#000000',
  },
}

SCSS

$custom: #1f509a;
$custom-light: #6f80b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f509a",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 154
  },
  "hsl": {
    "h": 216.098,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.44081,
    "c": 0.13203,
    "h": 258.8
  },
  "luminance": 0.08362
}

Semantic roles & 50–950 ramp

primary

#1F509A

secondary

#C19554

accent

#A53EE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F509A

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

Preview Lab → · Contrast checker → · Palette generator →