#1F2FA1#1F2FA1

#1F2FA1 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 38.1% C 0.182 H 268.8°. Best body text is #FFFFFF at 10.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F2FA1
RGB	rgb(31, 47, 161)
HSL	hsl(233, 68%, 38%)
HSV	hsv(233, 81%, 63%)
CMYK	cmyk(80.7%, 70.8%, 0%, 36.9%)
CIE-LAB	lab(26.44, 36.31, -62.83)
CIE-LCH	lch(26.44, 72.57, 300.03°)
OKLab	oklab(38.06% -0.0039 -0.182)
OKLCH	oklch(38.06% 0.182 268.8)
XYZ	xyz(8.0124, 4.8966, 34.2342)
Luminance	0.0490 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2FA1 #A1911F

analogous

#1F70A1 #1F2FA1 #501FA1

triadic

#1F2FA1 #A11F2F #2FA11F

tetradic

#1F2FA1 #A11F70 #A1911F #1FA150

square

#1F2FA1 #A11F70 #A1911F #1FA150

split-complementary

#1F2FA1 #A1501F #70A11F

monochromatic

#0B113A #15206E #1F2FA1 #293ED4 #5B6BDF

Accessibility & contrast

On white

10.61

#1F2FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1F2FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2FA1

10.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2FA1	#FFFFFF	#000000	##FFFFFF
##1F2FA1	1.00	10.61	1.98	10.61
#FFFFFF	10.61	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A4

Deuteranopia (green-blind)

#00389F

Tritanopia (blue-blind)

#004F64

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f2fa1;
/* rgb */ color: rgb(31, 47, 161);
/* oklch */ color: oklch(38.1% 0.182 268.8);

Tailwind

colors: {
  custom: {
    50: '#7368be',
    500: '#1f2fa1',
    950: '#000000',
  },
}

SCSS

$custom: #1f2fa1;
$custom-light: #7368be;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2fa1",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 161
  },
  "hsl": {
    "h": 232.615,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.3806,
    "c": 0.18204,
    "h": 268.8
  },
  "luminance": 0.04898
}

Semantic roles & 50–950 ramp

primary

#1F2FA1

secondary

#C4B658

accent

#D53DEB

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #1F2FA1

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

Preview Lab → · Contrast checker → · Palette generator →