#1F198D#1F198D

#1F198D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.6% C 0.179 H 272.6°. Best body text is #FFFFFF at 13.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F198D
RGB	rgb(31, 25, 141)
HSL	hsl(243, 70%, 33%)
HSV	hsv(243, 82%, 55%)
CMYK	cmyk(78%, 82.3%, 0%, 44.7%)
CIE-LAB	lab(19.68, 42.15, -61.70)
CIE-LCH	lch(19.68, 74.72, 304.34°)
OKLab	oklab(32.6% 0.0081 -0.1785)
OKLCH	oklch(32.6% 0.179 272.6)
XYZ	xyz(5.7188, 2.9090, 25.4542)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F198D #878D19

analogous

#194D8D #1F198D #59198D

triadic

#1F198D #8D1F19 #198D1F

tetradic

#1F198D #8D194D #878D19 #198D59

square

#1F198D #8D194D #878D19 #198D59

split-complementary

#1F198D #8D5919 #4D8D19

monochromatic

#080725 #141059 #1F198D #2A22C1 #4B43DE

Accessibility & contrast

On white

13.27

#1F198D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1F198D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F198D

13.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F198D	#FFFFFF	#000000	##FFFFFF
##1F198D	1.00	13.27	1.58	13.27
#FFFFFF	13.27	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003590

Deuteranopia (green-blind)

#002A8B

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f198d;
/* rgb */ color: rgb(31, 25, 141);
/* oklch */ color: oklch(32.6% 0.179 272.6);

Tailwind

colors: {
  custom: {
    50: '#7059b0',
    500: '#1f198d',
    950: '#000000',
  },
}

SCSS

$custom: #1f198d;
$custom-light: #7059b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f198d",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 141
  },
  "hsl": {
    "h": 243.103,
    "s": 69.88,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32602,
    "c": 0.1787,
    "h": 272.6
  },
  "luminance": 0.0291
}

Semantic roles & 50–950 ramp

primary

#1F198D

secondary

#B8BF43

accent

#ED3BE3

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1F198D

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

Preview Lab → · Contrast checker → · Palette generator →