#1F138C#1F138C

#1F138C is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.182 H 273.2°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F138C
RGB	rgb(31, 19, 140)
HSL	hsl(246, 76%, 31%)
HSV	hsv(246, 86%, 55%)
CMYK	cmyk(77.9%, 86.4%, 0%, 45.1%)
CIE-LAB	lab(18.58, 44.68, -62.88)
CIE-LCH	lch(18.58, 77.14, 305.39°)
OKLab	oklab(31.81% 0.0101 -0.1819)
OKLCH	oklch(31.81% 0.182 273.2)
XYZ	xyz(5.5300, 2.6499, 25.0259)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F138C #808C13

analogous

#13438C #1F138C #5B138C

triadic

#1F138C #8C1F13 #138C1F

tetradic

#1F138C #8C1343 #808C13 #138C5B

square

#1F138C #8C1343 #808C13 #138C5B

split-complementary

#1F138C #8C5B13 #438C13

monochromatic

#070420 #130C56 #1F138C #2B1AC2 #4736E4

Accessibility & contrast

On white

13.72

#1F138C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F138C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F138C

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F138C	#FFFFFF	#000000	##FFFFFF
##1F138C	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338F

Deuteranopia (green-blind)

#00278A

Tritanopia (blue-blind)

#003B52

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f138c;
/* rgb */ color: rgb(31, 19, 140);
/* oklch */ color: oklch(31.8% 0.182 273.2);

Tailwind

colors: {
  custom: {
    50: '#7056af',
    500: '#1f138c',
    950: '#000000',
  },
}

SCSS

$custom: #1f138c;
$custom-light: #7056af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f138c",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 140
  },
  "hsl": {
    "h": 245.95,
    "s": 76.101,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31811,
    "c": 0.18213,
    "h": 273.2
  },
  "luminance": 0.02651
}

Semantic roles & 50–950 ramp

primary

#1F138C

secondary

#B3C03B

accent

#F335E0

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F138C

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

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