#1F197D#1F197D

#1F197D is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.159 H 274.3°. Best body text is #FFFFFF at 14.06:1 contrast (WCAG AA passes).

Color values

HEX	#1F197D
RGB	rgb(31, 25, 125)
HSL	hsl(244, 67%, 29%)
HSV	hsv(244, 80%, 49%)
CMYK	cmyk(75.2%, 80%, 0%, 51%)
CIE-LAB	lab(17.77, 36.83, -54.77)
CIE-LCH	lch(17.77, 66.00, 303.92°)
OKLab	oklab(30.71% 0.012 -0.1584)
OKLCH	oklch(30.71% 0.159 274.3)
XYZ	xyz(4.6131, 2.4668, 19.6311)
Luminance	0.0247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F197D #777D19

analogous

#19457D #1F197D #51197D

triadic

#1F197D #7D1F19 #197D1F

tetradic

#1F197D #7D1945 #777D19 #197D51

square

#1F197D #7D1945 #777D19 #197D51

split-complementary

#1F197D #7D5119 #457D19

monochromatic

#06051A #120F4A #1F197D #2C23B0 #4339D7

Accessibility & contrast

On white

14.06

#1F197D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1F197D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F197D

14.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F197D	#FFFFFF	#000000	##FFFFFF
##1F197D	1.00	14.06	1.49	14.06
#FFFFFF	14.06	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003080

Deuteranopia (green-blind)

#00277B

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f197d;
/* rgb */ color: rgb(31, 25, 125);
/* oklch */ color: oklch(30.7% 0.159 274.3);

Tailwind

colors: {
  custom: {
    50: '#6b58a4',
    500: '#1f197d',
    950: '#000000',
  },
}

SCSS

$custom: #1f197d;
$custom-light: #6b58a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f197d",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 125
  },
  "hsl": {
    "h": 243.6,
    "s": 66.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30712,
    "c": 0.15886,
    "h": 274.3
  },
  "luminance": 0.02467
}

Semantic roles & 50–950 ramp

primary

#1F197D

secondary

#ABB140

accent

#EA3EDF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F197D

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

Preview Lab → · Contrast checker → · Palette generator →