#1F2FB4#1F2FB4

#1F2FB4 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.1% C 0.206 H 268.3°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#1F2FB4
RGB	rgb(31, 47, 180)
HSL	hsl(234, 71%, 41%)
HSV	hsv(234, 83%, 71%)
CMYK	cmyk(82.8%, 73.9%, 0%, 29.4%)
CIE-LAB	lab(28.43, 43.09, -70.97)
CIE-LCH	lch(28.43, 83.03, 301.27°)
OKLab	oklab(40.08% -0.0061 -0.2057)
OKLCH	oklch(40.08% 0.206 268.3)
XYZ	xyz(9.8170, 5.6184, 43.7382)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2FB4 #B4A41F

analogous

#1F7AB4 #1F2FB4 #5A1FB4

triadic

#1F2FB4 #B41F2F #2FB41F

tetradic

#1F2FB4 #B41F7A #B4A41F #1FB45A

square

#1F2FB4 #B41F7A #B4A41F #1FB45A

split-complementary

#1F2FB4 #B45A1F #7AB41F

monochromatic

#0D144C #162180 #1F2FB4 #3446DC #6876E5

Accessibility & contrast

On white

9.89

#1F2FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1F2FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2FB4

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2FB4	#FFFFFF	#000000	##FFFFFF
##1F2FB4	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB8

Deuteranopia (green-blind)

#003CB2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f2fb4;
/* rgb */ color: rgb(31, 47, 180);
/* oklch */ color: oklch(40.1% 0.206 268.3);

Tailwind

colors: {
  custom: {
    50: '#7869cc',
    500: '#1f2fb4',
    950: '#000000',
  },
}

SCSS

$custom: #1f2fb4;
$custom-light: #7869cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2fb4",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 180
  },
  "hsl": {
    "h": 233.557,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.40083,
    "c": 0.20577,
    "h": 268.3
  },
  "luminance": 0.0562
}

Semantic roles & 50–950 ramp

primary

#1F2FB4

secondary

#CBC064

accent

#DA3AED

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #1F2FB4

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

Preview Lab → · Contrast checker → · Palette generator →