#1F519F#1F519F

#1F519F is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.7% C 0.138 H 259.3°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F519F
RGB	rgb(31, 81, 159)
HSL	hsl(217, 67%, 37%)
HSV	hsv(217, 81%, 62%)
CMYK	cmyk(80.5%, 49.1%, 0%, 37.6%)
CIE-LAB	lab(35.36, 12.80, -47.08)
CIE-LCH	lch(35.36, 48.79, 285.21°)
OKLab	oklab(44.68% -0.0257 -0.1353)
OKLCH	oklch(44.68% 0.138 259.3)
XYZ	xyz(9.7632, 8.6782, 33.9547)
Luminance	0.0868 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F519F #9F6D1F

analogous

#1F919F #1F519F #2D1F9F

triadic

#1F519F #9F1F51 #519F1F

tetradic

#1F519F #9F1F91 #9F6D1F #1F9F2D

square

#1F519F #9F1F91 #9F6D1F #1F9F2D

split-complementary

#1F519F #9F2D1F #919F1F

monochromatic

#0B1D39 #15376C #1F519F #296BD2 #5A8EDF

Accessibility & contrast

On white

7.68

#1F519F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#1F519F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F519F

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F519F	#FFFFFF	#000000	##FFFFFF
##1F519F	1.00	7.68	2.74	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2459A2

Deuteranopia (green-blind)

#004E9D

Tritanopia (blue-blind)

#006470

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f519f;
/* rgb */ color: rgb(31, 81, 159);
/* oklch */ color: oklch(44.7% 0.138 259.3);

Tailwind

colors: {
  custom: {
    50: '#7081bc',
    500: '#1f519f',
    950: '#000000',
  },
}

SCSS

$custom: #1f519f;
$custom-light: #7081bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f519f",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 159
  },
  "hsl": {
    "h": 216.563,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.44677,
    "c": 0.13775,
    "h": 259.3
  },
  "luminance": 0.08679
}

Semantic roles & 50–950 ramp

primary

#1F519F

secondary

#C39957

accent

#A73EEA

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F519F

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

Preview Lab → · Contrast checker → · Palette generator →