#1F3EA0#1F3EA0

#1F3EA0 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.7% C 0.163 H 265.8°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#1F3EA0
RGB	rgb(31, 62, 160)
HSL	hsl(226, 68%, 37%)
HSV	hsv(226, 81%, 63%)
CMYK	cmyk(80.6%, 61.2%, 0%, 37.3%)
CIE-LAB	lab(30.09, 26.06, -56.23)
CIE-LCH	lch(30.09, 61.97, 294.87°)
OKLab	oklab(40.72% -0.0119 -0.1626)
OKLCH	oklch(40.72% 0.163 265.8)
XYZ	xyz(8.6306, 6.2736, 34.0069)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3EA0 #A0811F

analogous

#1F7FA0 #1F3EA0 #401FA0

triadic

#1F3EA0 #A01F3E #3EA01F

tetradic

#1F3EA0 #A01F7F #A0811F #1FA040

square

#1F3EA0 #A01F7F #A0811F #1FA040

split-complementary

#1F3EA0 #A0401F #7FA01F

monochromatic

#0B1639 #152A6D #1F3EA0 #2952D3 #5A7ADF

Accessibility & contrast

On white

9.31

#1F3EA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1F3EA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3EA0

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3EA0	#FFFFFF	#000000	##FFFFFF
##1F3EA0	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA3

Deuteranopia (green-blind)

#00419E

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f3ea0;
/* rgb */ color: rgb(31, 62, 160);
/* oklch */ color: oklch(40.7% 0.163 265.8);

Tailwind

colors: {
  custom: {
    50: '#7172bd',
    500: '#1f3ea0',
    950: '#000000',
  },
}

SCSS

$custom: #1f3ea0;
$custom-light: #7172bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3ea0",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 160
  },
  "hsl": {
    "h": 225.581,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.40715,
    "c": 0.16302,
    "h": 265.8
  },
  "luminance": 0.06275
}

Semantic roles & 50–950 ramp

primary

#1F3EA0

secondary

#C3A958

accent

#C13DEA

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F3EA0

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

Preview Lab → · Contrast checker → · Palette generator →