#1F3E9F#1F3E9F

#1F3E9F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.162 H 265.8°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E9F
RGB	rgb(31, 62, 159)
HSL	hsl(225, 67%, 37%)
HSV	hsv(225, 81%, 62%)
CMYK	cmyk(80.5%, 61%, 0%, 37.6%)
CIE-LAB	lab(30.01, 25.67, -55.76)
CIE-LCH	lch(30.01, 61.38, 294.72°)
OKLab	oklab(40.63% -0.0119 -0.1612)
OKLCH	oklch(40.63% 0.162 265.8)
XYZ	xyz(8.5435, 6.2388, 33.5481)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E9F #9F801F

analogous

#1F7E9F #1F3E9F #401F9F

triadic

#1F3E9F #9F1F3E #3E9F1F

tetradic

#1F3E9F #9F1F7E #9F801F #1F9F40

square

#1F3E9F #9F1F7E #9F801F #1F9F40

split-complementary

#1F3E9F #9F401F #7E9F1F

monochromatic

#0B1639 #152A6C #1F3E9F #2952D2 #5A7ADF

Accessibility & contrast

On white

9.34

#1F3E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1F3E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E9F

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E9F	#FFFFFF	#000000	##FFFFFF
##1F3E9F	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA2

Deuteranopia (green-blind)

#00419D

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f3e9f;
/* rgb */ color: rgb(31, 62, 159);
/* oklch */ color: oklch(40.6% 0.162 265.8);

Tailwind

colors: {
  custom: {
    50: '#7172bc',
    500: '#1f3e9f',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e9f;
$custom-light: #7172bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e9f",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 159
  },
  "hsl": {
    "h": 225.469,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40625,
    "c": 0.16165,
    "h": 265.8
  },
  "luminance": 0.0624
}

Semantic roles & 50–950 ramp

primary

#1F3E9F

secondary

#C3A957

accent

#C03EEA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F3E9F

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

Preview Lab → · Contrast checker → · Palette generator →