#1F247A#1F247A

#1F247A is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.1% C 0.143 H 272.5°. Best body text is #FFFFFF at 13.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F247A
RGB	rgb(31, 36, 122)
HSL	hsl(237, 59%, 30%)
HSV	hsv(237, 75%, 48%)
CMYK	cmyk(74.6%, 70.5%, 0%, 52.2%)
CIE-LAB	lab(19.87, 28.99, -49.38)
CIE-LCH	lch(19.87, 57.26, 300.42°)
OKLab	oklab(32.12% 0.0063 -0.1428)
OKLCH	oklch(32.12% 0.143 272.5)
XYZ	xyz(4.7076, 2.9577, 18.7314)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F247A #7A751F

analogous

#1F527A #1F247A #471F7A

triadic

#1F247A #7A1F24 #247A1F

tetradic

#1F247A #7A1F52 #7A751F #1F7A47

square

#1F247A #7A1F52 #7A751F #1F7A47

split-complementary

#1F247A #7A471F #527A1F

monochromatic

#060718 #131649 #1F247A #2B32AB #444CCF

Accessibility & contrast

On white

13.19

#1F247A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1F247A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F247A

13.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F247A	#FFFFFF	#000000	##FFFFFF
##1F247A	1.00	13.19	1.59	13.19
#FFFFFF	13.19	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347D

Deuteranopia (green-blind)

#002C78

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f247a;
/* rgb */ color: rgb(31, 36, 122);
/* oklch */ color: oklch(32.1% 0.143 272.5);

Tailwind

colors: {
  custom: {
    50: '#6a5fa1',
    500: '#1f247a',
    950: '#000000',
  },
}

SCSS

$custom: #1f247a;
$custom-light: #6a5fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f247a",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 122
  },
  "hsl": {
    "h": 236.703,
    "s": 59.477,
    "l": 30
  },
  "oklch": {
    "l": 0.32118,
    "c": 0.14291,
    "h": 272.5
  },
  "luminance": 0.02958
}

Semantic roles & 50–950 ramp

primary

#1F247A

secondary

#ADA847

accent

#DA45E3

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1F247A

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

Preview Lab → · Contrast checker → · Palette generator →