#1F4299#1F4299

#1F4299 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.9% C 0.148 H 264.2°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#1F4299
RGB	rgb(31, 66, 153)
HSL	hsl(223, 66%, 36%)
HSV	hsv(223, 80%, 60%)
CMYK	cmyk(79.7%, 56.9%, 0%, 40%)
CIE-LAB	lab(30.61, 20.58, -51.14)
CIE-LCH	lch(30.61, 55.12, 291.92°)
OKLab	oklab(40.92% -0.0149 -0.1476)
OKLCH	oklch(40.92% 0.148 264.2)
XYZ	xyz(8.2610, 6.4867, 30.9475)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4299 #99761F

analogous

#1F7F99 #1F4299 #391F99

triadic

#1F4299 #991F42 #42991F

tetradic

#1F4299 #991F7F #99761F #1F9939

square

#1F4299 #991F7F #99761F #1F9939

split-complementary

#1F4299 #99391F #7F991F

monochromatic

#0A1633 #152C66 #1F4299 #2958CC #567CDD

Accessibility & contrast

On white

9.14

#1F4299 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1F4299 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4299

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4299	#FFFFFF	#000000	##FFFFFF
##1F4299	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9C

Deuteranopia (green-blind)

#004397

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4299;
/* rgb */ color: rgb(31, 66, 153);
/* oklch */ color: oklch(40.9% 0.148 264.2);

Tailwind

colors: {
  custom: {
    50: '#6f75b8',
    500: '#1f4299',
    950: '#000000',
  },
}

SCSS

$custom: #1f4299;
$custom-light: #6f75b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4299",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 153
  },
  "hsl": {
    "h": 222.787,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.40921,
    "c": 0.14833,
    "h": 264.2
  },
  "luminance": 0.06488
}

Semantic roles & 50–950 ramp

primary

#1F4299

secondary

#C0A154

accent

#B83FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F4299

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

Preview Lab → · Contrast checker → · Palette generator →