#1F135E#1F135E

#1F135E is a dark, vivid blue. Relative luminance 0.016; OKLCH L 26.3% C 0.125 H 280.9°. Best body text is #FFFFFF at 15.99:1 contrast (WCAG AA passes).

Color values

HEX	#1F135E
RGB	rgb(31, 19, 94)
HSL	hsl(250, 66%, 22%)
HSV	hsv(250, 80%, 37%)
CMYK	cmyk(67%, 79.8%, 0%, 63.1%)
CIE-LAB	lab(13.02, 29.68, -42.38)
CIE-LCH	lch(13.02, 51.74, 305.00°)
OKLab	oklab(26.32% 0.0234 -0.1223)
OKLCH	oklch(26.32% 0.125 280.9)
XYZ	xyz(2.8177, 1.5650, 10.7411)
Luminance	0.0157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F135E #525E13

analogous

#132D5E #1F135E #45135E

triadic

#1F135E #5E1F13 #135E1F

tetradic

#1F135E #5E132D #525E13 #135E45

square

#1F135E #5E132D #525E13 #135E45

split-complementary

#1F135E #5E4513 #2D5E13

monochromatic

#080519 #0E092B #1F135E #301D91 #4128C4

Accessibility & contrast

On white

15.99

#1F135E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#1F135E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F135E

15.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F135E	#FFFFFF	#000000	##FFFFFF
##1F135E	1.00	15.99	1.31	15.99
#FFFFFF	15.99	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	15.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002460

Deuteranopia (green-blind)

#001F5D

Tritanopia (blue-blind)

#002837

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1f135e;
/* rgb */ color: rgb(31, 19, 94);
/* oklch */ color: oklch(26.3% 0.125 280.9);

Tailwind

colors: {
  custom: {
    50: '#64528d',
    500: '#1f135e',
    950: '#000000',
  },
}

SCSS

$custom: #1f135e;
$custom-light: #64528d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f135e",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 94
  },
  "hsl": {
    "h": 249.6,
    "s": 66.372,
    "l": 22.157
  },
  "oklch": {
    "l": 0.26317,
    "c": 0.12451,
    "h": 280.9
  },
  "luminance": 0.01565
}

Semantic roles & 50–950 ramp

primary

#1F135E

secondary

#879637

accent

#E93FCE

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F135E

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

Preview Lab → · Contrast checker → · Palette generator →