#1F139F#1F139F

#1F139F is a dark, highly saturated blue. Relative luminance 0.033; OKLCH L 34.2% C 0.204 H 271.3°. Best body text is #FFFFFF at 12.71:1 contrast (WCAG AA passes).

Color values

HEX	#1F139F
RGB	rgb(31, 19, 159)
HSL	hsl(245, 79%, 35%)
HSV	hsv(245, 88%, 62%)
CMYK	cmyk(80.5%, 88.1%, 0%, 37.6%)
CIE-LAB	lab(21.05, 50.40, -70.53)
CIE-LCH	lch(21.05, 86.68, 305.55°)
OKLab	oklab(34.2% 0.0048 -0.2039)
OKLCH	oklch(34.2% 0.204 271.3)
XYZ	xyz(7.0538, 3.2595, 33.0515)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F139F #939F13

analogous

#134D9F #1F139F #65139F

triadic

#1F139F #9F1F13 #139F1F

tetradic

#1F139F #9F134D #939F13 #139F65

square

#1F139F #9F134D #939F13 #139F65

split-complementary

#1F139F #9F6513 #4D9F13

monochromatic

#0A0632 #140C68 #1F139F #2A1AD6 #5244E9

Accessibility & contrast

On white

12.71

#1F139F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1F139F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F139F

12.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F139F	#FFFFFF	#000000	##FFFFFF
##1F139F	1.00	12.71	1.65	12.71
#FFFFFF	12.71	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0039A3

Deuteranopia (green-blind)

#002B9D

Tritanopia (blue-blind)

#00435D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f139f;
/* rgb */ color: rgb(31, 19, 159);
/* oklch */ color: oklch(34.2% 0.204 271.3);

Tailwind

colors: {
  custom: {
    50: '#7558bd',
    500: '#1f139f',
    950: '#000000',
  },
}

SCSS

$custom: #1f139f;
$custom-light: #7558bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f139f",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 159
  },
  "hsl": {
    "h": 245.143,
    "s": 78.652,
    "l": 34.902
  },
  "oklch": {
    "l": 0.34204,
    "c": 0.20401,
    "h": 271.3
  },
  "luminance": 0.0326
}

Semantic roles & 50–950 ramp

primary

#1F139F

secondary

#BEC945

accent

#F533E4

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F139F

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

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