#1F3DA7#1F3DA7

#1F3DA7 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.2% C 0.174 H 266.3°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F3DA7
RGB	rgb(31, 61, 167)
HSL	hsl(227, 69%, 39%)
HSV	hsv(227, 81%, 65%)
CMYK	cmyk(81.4%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(30.44, 29.44, -59.87)
CIE-LCH	lch(30.44, 66.72, 296.18°)
OKLab	oklab(41.16% -0.0113 -0.1733)
OKLCH	oklch(41.16% 0.174 266.3)
XYZ	xyz(9.2064, 6.4177, 37.3052)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3DA7 #A7891F

analogous

#1F81A7 #1F3DA7 #451FA7

triadic

#1F3DA7 #A71F3D #3DA71F

tetradic

#1F3DA7 #A71F81 #A7891F #1FA745

square

#1F3DA7 #A71F81 #A7891F #1FA745

split-complementary

#1F3DA7 #A7451F #81A71F

monochromatic

#0C1740 #152A73 #1F3DA7 #2B51D8 #5F7CE1

Accessibility & contrast

On white

9.20

#1F3DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1F3DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3DA7

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3DA7	#FFFFFF	#000000	##FFFFFF
##1F3DA7	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAA

Deuteranopia (green-blind)

#0041A5

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f3da7;
/* rgb */ color: rgb(31, 61, 167);
/* oklch */ color: oklch(41.2% 0.174 266.3);

Tailwind

colors: {
  custom: {
    50: '#7372c2',
    500: '#1f3da7',
    950: '#000000',
  },
}

SCSS

$custom: #1f3da7;
$custom-light: #7372c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3da7",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 226.765,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.41164,
    "c": 0.17365,
    "h": 266.3
  },
  "luminance": 0.06419
}

Semantic roles & 50–950 ramp

primary

#1F3DA7

secondary

#C6AE5C

accent

#C53CEC

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #1F3DA7

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

Preview Lab → · Contrast checker → · Palette generator →