#1F5099#1F5099

#1F5099 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.0% C 0.131 H 258.6°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#1F5099
RGB	rgb(31, 80, 153)
HSL	hsl(216, 66%, 36%)
HSV	hsv(216, 80%, 60%)
CMYK	cmyk(79.7%, 47.7%, 0%, 40%)
CIE-LAB	lab(34.66, 11.07, -44.59)
CIE-LCH	lch(34.66, 45.95, 283.95°)
OKLab	oklab(44.01% -0.0258 -0.128)
OKLCH	oklch(44.01% 0.131 258.6)
XYZ	xyz(9.1814, 8.3275, 31.2543)
Luminance	0.0833 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5099 #99681F

analogous

#1F8D99 #1F5099 #2B1F99

triadic

#1F5099 #991F50 #50991F

tetradic

#1F5099 #991F8D #99681F #1F992B

square

#1F5099 #991F8D #99681F #1F992B

split-complementary

#1F5099 #992B1F #8D991F

monochromatic

#0A1B33 #153566 #1F5099 #296BCC #568CDD

Accessibility & contrast

On white

7.88

#1F5099 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1F5099 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5099

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5099	#FFFFFF	#000000	##FFFFFF
##1F5099	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28579C

Deuteranopia (green-blind)

#054C98

Tritanopia (blue-blind)

#00616D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f5099;
/* rgb */ color: rgb(31, 80, 153);
/* oklch */ color: oklch(44.0% 0.131 258.6);

Tailwind

colors: {
  custom: {
    50: '#6e80b7',
    500: '#1f5099',
    950: '#000000',
  },
}

SCSS

$custom: #1f5099;
$custom-light: #6e80b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5099",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 153
  },
  "hsl": {
    "h": 215.902,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.44007,
    "c": 0.13063,
    "h": 258.6
  },
  "luminance": 0.08329
}

Semantic roles & 50–950 ramp

primary

#1F5099

secondary

#C09554

accent

#A53FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F5099

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

Preview Lab → · Contrast checker → · Palette generator →