#1F217B#1F217B

#1F217B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.148 H 273.1°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F217B
RGB	rgb(31, 33, 123)
HSL	hsl(239, 60%, 30%)
HSV	hsv(239, 75%, 48%)
CMYK	cmyk(74.8%, 73.2%, 0%, 51.8%)
CIE-LAB	lab(19.26, 31.32, -51.03)
CIE-LCH	lch(19.26, 59.87, 301.54°)
OKLab	oklab(31.71% 0.0081 -0.1476)
OKLCH	oklch(31.71% 0.148 273.1)
XYZ	xyz(4.6829, 2.8086, 19.0304)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F217B #7B791F

analogous

#1F4F7B #1F217B #4B1F7B

triadic

#1F217B #7B1F21 #217B1F

tetradic

#1F217B #7B1F4F #7B791F #1F7B4B

square

#1F217B #7B1F4F #7B791F #1F7B4B

split-complementary

#1F217B #7B4B1F #4F7B1F

monochromatic

#060719 #13144A #1F217B #2B2EAC #4447D0

Accessibility & contrast

On white

13.45

#1F217B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1F217B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F217B

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F217B	#FFFFFF	#000000	##FFFFFF
##1F217B	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#003A4B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f217b;
/* rgb */ color: rgb(31, 33, 123);
/* oklch */ color: oklch(31.7% 0.148 273.1);

Tailwind

colors: {
  custom: {
    50: '#6a5da2',
    500: '#1f217b',
    950: '#000000',
  },
}

SCSS

$custom: #1f217b;
$custom-light: #6a5da2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f217b",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 123
  },
  "hsl": {
    "h": 238.696,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.31706,
    "c": 0.1478,
    "h": 273.1
  },
  "luminance": 0.02809
}

Semantic roles & 50–950 ramp

primary

#1F217B

secondary

#AEAC48

accent

#DF45E3

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1F217B

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

Preview Lab → · Contrast checker → · Palette generator →