#1F2397#1F2397

#1F2397 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.1% C 0.182 H 270.8°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#1F2397
RGB	rgb(31, 35, 151)
HSL	hsl(238, 66%, 36%)
HSV	hsv(238, 79%, 59%)
CMYK	cmyk(79.5%, 76.8%, 0%, 40.8%)
CIE-LAB	lab(22.75, 40.04, -62.81)
CIE-LCH	lch(22.75, 74.49, 302.52°)
OKLab	oklab(35.1% 0.0025 -0.1819)
OKLCH	oklch(35.1% 0.182 270.8)
XYZ	xyz(6.7501, 3.7270, 29.6358)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2397 #97931F

analogous

#1F5F97 #1F2397 #571F97

triadic

#1F2397 #971F23 #23971F

tetradic

#1F2397 #971F5F #97931F #1F9757

square

#1F2397 #971F5F #97931F #1F9757

split-complementary

#1F2397 #97571F #5F971F

monochromatic

#0A0B31 #151764 #1F2397 #292FCA #5459DC

Accessibility & contrast

On white

12.03

#1F2397 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1F2397 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2397

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2397	#FFFFFF	#000000	##FFFFFF
##1F2397	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9A

Deuteranopia (green-blind)

#003095

Tritanopia (blue-blind)

#00455B

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2397;
/* rgb */ color: rgb(31, 35, 151);
/* oklch */ color: oklch(35.1% 0.182 270.8);

Tailwind

colors: {
  custom: {
    50: '#715fb7',
    500: '#1f2397',
    950: '#000000',
  },
}

SCSS

$custom: #1f2397;
$custom-light: #715fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2397",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 151
  },
  "hsl": {
    "h": 238,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35101,
    "c": 0.1819,
    "h": 270.8
  },
  "luminance": 0.03728
}

Semantic roles & 50–950 ramp

primary

#1F2397

secondary

#BFBC52

accent

#E33FE9

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F2397

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

Preview Lab → · Contrast checker → · Palette generator →