#1F5199#1F5199

#1F5199 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.2% C 0.129 H 258.1°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#1F5199
RGB	rgb(31, 81, 153)
HSL	hsl(215, 66%, 36%)
HSV	hsv(215, 80%, 60%)
CMYK	cmyk(79.7%, 47.1%, 0%, 40%)
CIE-LAB	lab(34.95, 10.40, -44.12)
CIE-LCH	lch(34.95, 45.33, 283.27°)
OKLab	oklab(44.24% -0.0267 -0.1266)
OKLCH	oklch(44.24% 0.129 258.1)
XYZ	xyz(9.2552, 8.4750, 31.2789)
Luminance	0.0848 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5199 #99671F

analogous

#1F8E99 #1F5199 #2A1F99

triadic

#1F5199 #991F51 #51991F

tetradic

#1F5199 #991F8E #99671F #1F992A

square

#1F5199 #991F8E #99671F #1F992A

split-complementary

#1F5199 #992A1F #8E991F

monochromatic

#0A1B33 #153666 #1F5199 #296CCC #568DDD

Accessibility & contrast

On white

7.79

#1F5199 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1F5199 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5199

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5199	#FFFFFF	#000000	##FFFFFF
##1F5199	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A589C

Deuteranopia (green-blind)

#0B4D98

Tritanopia (blue-blind)

#00626D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f5199;
/* rgb */ color: rgb(31, 81, 153);
/* oklch */ color: oklch(44.2% 0.129 258.1);

Tailwind

colors: {
  custom: {
    50: '#6e81b7',
    500: '#1f5199',
    950: '#000000',
  },
}

SCSS

$custom: #1f5199;
$custom-light: #6e81b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5199",
  "rgb": {
    "r": 31,
    "g": 81,
    "b": 153
  },
  "hsl": {
    "h": 215.41,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.44237,
    "c": 0.1294,
    "h": 258.1
  },
  "luminance": 0.08476
}

Semantic roles & 50–950 ramp

primary

#1F5199

secondary

#C09454

accent

#A33FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F5199

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

Preview Lab → · Contrast checker → · Palette generator →