#1F198E#1F198E

#1F198E is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.7% C 0.180 H 272.5°. Best body text is #FFFFFF at 13.22:1 contrast (WCAG AA passes).

Color values

HEX	#1F198E
RGB	rgb(31, 25, 142)
HSL	hsl(243, 70%, 33%)
HSV	hsv(243, 82%, 56%)
CMYK	cmyk(78.2%, 82.4%, 0%, 44.3%)
CIE-LAB	lab(19.80, 42.48, -62.12)
CIE-LCH	lch(19.80, 75.25, 304.36°)
OKLab	oklab(32.72% 0.0078 -0.1797)
OKLCH	oklch(32.72% 0.18 272.5)
XYZ	xyz(5.7936, 2.9389, 25.8479)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F198E #888E19

analogous

#194D8E #1F198E #59198E

triadic

#1F198E #8E1F19 #198E1F

tetradic

#1F198E #8E194D #888E19 #198E59

square

#1F198E #8E194D #888E19 #198E59

split-complementary

#1F198E #8E5919 #4D8E19

monochromatic

#080726 #14105A #1F198E #2A22C2 #4B43DE

Accessibility & contrast

On white

13.22

#1F198E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1F198E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F198E

13.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F198E	#FFFFFF	#000000	##FFFFFF
##1F198E	1.00	13.22	1.59	13.22
#FFFFFF	13.22	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003591

Deuteranopia (green-blind)

#002A8C

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f198e;
/* rgb */ color: rgb(31, 25, 142);
/* oklch */ color: oklch(32.7% 0.180 272.5);

Tailwind

colors: {
  custom: {
    50: '#7059b0',
    500: '#1f198e',
    950: '#000000',
  },
}

SCSS

$custom: #1f198e;
$custom-light: #7059b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f198e",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 142
  },
  "hsl": {
    "h": 243.077,
    "s": 70.06,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32722,
    "c": 0.17991,
    "h": 272.5
  },
  "luminance": 0.0294
}

Semantic roles & 50–950 ramp

primary

#1F198E

secondary

#B9BF44

accent

#ED3BE4

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1F198E

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

Preview Lab → · Contrast checker → · Palette generator →