#1F3B97#1F3B97

#1F3B97 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.154 H 266.2°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#1F3B97
RGB	rgb(31, 59, 151)
HSL	hsl(226, 66%, 36%)
HSV	hsv(226, 79%, 59%)
CMYK	cmyk(79.5%, 60.9%, 0%, 40.8%)
CIE-LAB	lab(28.52, 24.58, -53.32)
CIE-LCH	lch(28.52, 58.71, 294.75°)
OKLab	oklab(39.3% -0.0101 -0.1541)
OKLCH	oklch(39.3% 0.154 266.2)
XYZ	xyz(7.7130, 5.6527, 29.9567)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3B97 #977B1F

analogous

#1F7797 #1F3B97 #3F1F97

triadic

#1F3B97 #971F3B #3B971F

tetradic

#1F3B97 #971F77 #977B1F #1F973F

square

#1F3B97 #971F77 #977B1F #1F973F

split-complementary

#1F3B97 #973F1F #77971F

monochromatic

#0A1331 #152764 #1F3B97 #294FCA #5474DC

Accessibility & contrast

On white

9.86

#1F3B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1F3B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3B97

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3B97	#FFFFFF	#000000	##FFFFFF
##1F3B97	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499A

Deuteranopia (green-blind)

#003E95

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f3b97;
/* rgb */ color: rgb(31, 59, 151);
/* oklch */ color: oklch(39.3% 0.154 266.2);

Tailwind

colors: {
  custom: {
    50: '#6f70b6',
    500: '#1f3b97',
    950: '#000000',
  },
}

SCSS

$custom: #1f3b97;
$custom-light: #6f70b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3b97",
  "rgb": {
    "r": 31,
    "g": 59,
    "b": 151
  },
  "hsl": {
    "h": 226,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39303,
    "c": 0.15444,
    "h": 266.2
  },
  "luminance": 0.05654
}

Semantic roles & 50–950 ramp

primary

#1F3B97

secondary

#BFA652

accent

#C13FE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1F3B97

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

Preview Lab → · Contrast checker → · Palette generator →