#1F3C97#1F3C97

#1F3C97 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.153 H 266.0°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#1F3C97
RGB	rgb(31, 60, 151)
HSL	hsl(226, 66%, 36%)
HSV	hsv(226, 79%, 59%)
CMYK	cmyk(79.5%, 60.3%, 0%, 40.8%)
CIE-LAB	lab(28.79, 23.90, -52.88)
CIE-LCH	lch(28.79, 58.03, 294.32°)
OKLab	oklab(39.51% -0.0108 -0.1528)
OKLCH	oklch(39.51% 0.153 266)
XYZ	xyz(7.7649, 5.7565, 29.9740)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3C97 #977A1F

analogous

#1F7897 #1F3C97 #3E1F97

triadic

#1F3C97 #971F3C #3C971F

tetradic

#1F3C97 #971F78 #977A1F #1F973E

square

#1F3C97 #971F78 #977A1F #1F973E

split-complementary

#1F3C97 #973E1F #78971F

monochromatic

#0A1431 #152864 #1F3C97 #2950CA #5475DC

Accessibility & contrast

On white

9.76

#1F3C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1F3C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3C97

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3C97	#FFFFFF	#000000	##FFFFFF
##1F3C97	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9A

Deuteranopia (green-blind)

#003E95

Tritanopia (blue-blind)

#005363

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f3c97;
/* rgb */ color: rgb(31, 60, 151);
/* oklch */ color: oklch(39.5% 0.153 266.0);

Tailwind

colors: {
  custom: {
    50: '#6f71b6',
    500: '#1f3c97',
    950: '#000000',
  },
}

SCSS

$custom: #1f3c97;
$custom-light: #6f71b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3c97",
  "rgb": {
    "r": 31,
    "g": 60,
    "b": 151
  },
  "hsl": {
    "h": 225.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39505,
    "c": 0.15318,
    "h": 266
  },
  "luminance": 0.05757
}

Semantic roles & 50–950 ramp

primary

#1F3C97

secondary

#BFA552

accent

#C03FE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1F3C97

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

Preview Lab → · Contrast checker → · Palette generator →