#1F2F8F#1F2F8F

#1F2F8F is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.2% C 0.158 H 269.1°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F8F
RGB	rgb(31, 47, 143)
HSL	hsl(231, 64%, 34%)
HSV	hsv(231, 78%, 56%)
CMYK	cmyk(78.3%, 67.1%, 0%, 43.9%)
CIE-LAB	lab(24.66, 29.60, -54.72)
CIE-LCH	lch(24.66, 62.21, 298.42°)
OKLab	oklab(36.23% -0.0024 -0.1583)
OKLCH	oklch(36.23% 0.158 269.1)
XYZ	xyz(6.5378, 4.3068, 26.4680)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F8F #8F7F1F

analogous

#1F678F #1F2F8F #471F8F

triadic

#1F2F8F #8F1F2F #2F8F1F

tetradic

#1F2F8F #8F1F67 #8F7F1F #1F8F47

square

#1F2F8F #8F1F67 #8F7F1F #1F8F47

split-complementary

#1F2F8F #8F471F #678F1F

monochromatic

#090E2A #141E5D #1F2F8F #2A40C1 #4F63D9

Accessibility & contrast

On white

11.28

#1F2F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1F2F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F8F

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F8F	#FFFFFF	#000000	##FFFFFF
##1F2F8F	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004092

Deuteranopia (green-blind)

#00358D

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f2f8f;
/* rgb */ color: rgb(31, 47, 143);
/* oklch */ color: oklch(36.2% 0.158 269.1);

Tailwind

colors: {
  custom: {
    50: '#6e67b1',
    500: '#1f2f8f',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f8f;
$custom-light: #6e67b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f8f",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 143
  },
  "hsl": {
    "h": 231.429,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.3623,
    "c": 0.15834,
    "h": 269.1
  },
  "luminance": 0.04308
}

Semantic roles & 50–950 ramp

primary

#1F2F8F

secondary

#BCAC4E

accent

#D040E7

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1F2F8F

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

Preview Lab → · Contrast checker → · Palette generator →