#1F3E9E#1F3E9E

#1F3E9E is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.160 H 265.7°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E9E
RGB	rgb(31, 62, 158)
HSL	hsl(225, 67%, 37%)
HSV	hsv(225, 80%, 62%)
CMYK	cmyk(80.4%, 60.8%, 0%, 38%)
CIE-LAB	lab(29.92, 25.28, -55.29)
CIE-LCH	lch(29.92, 60.80, 294.57°)
OKLab	oklab(40.53% -0.0119 -0.1598)
OKLCH	oklch(40.53% 0.16 265.7)
XYZ	xyz(8.4571, 6.2042, 33.0929)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E9E #9E7F1F

analogous

#1F7E9E #1F3E9E #3F1F9E

triadic

#1F3E9E #9E1F3E #3E9E1F

tetradic

#1F3E9E #9E1F7E #9E7F1F #1F9E3F

square

#1F3E9E #9E1F7E #9E7F1F #1F9E3F

split-complementary

#1F3E9E #9E3F1F #7E9E1F

monochromatic

#0B1638 #152A6B #1F3E9E #2952D1 #597ADE

Accessibility & contrast

On white

9.37

#1F3E9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1F3E9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E9E

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E9E	#FFFFFF	#000000	##FFFFFF
##1F3E9E	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA1

Deuteranopia (green-blind)

#00419C

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f3e9e;
/* rgb */ color: rgb(31, 62, 158);
/* oklch */ color: oklch(40.5% 0.160 265.7);

Tailwind

colors: {
  custom: {
    50: '#7172bb',
    500: '#1f3e9e',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e9e;
$custom-light: #7172bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e9e",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 158
  },
  "hsl": {
    "h": 225.354,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40535,
    "c": 0.16029,
    "h": 265.7
  },
  "luminance": 0.06205
}

Semantic roles & 50–950 ramp

primary

#1F3E9E

secondary

#C2A856

accent

#C03EEA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F3E9E

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

Preview Lab → · Contrast checker → · Palette generator →