#1F227F#1F227F

#1F227F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.3% C 0.152 H 272.6°. Best body text is #FFFFFF at 13.18:1 contrast (WCAG AA passes).

Color values

HEX	#1F227F
RGB	rgb(31, 34, 127)
HSL	hsl(238, 61%, 31%)
HSV	hsv(238, 76%, 50%)
CMYK	cmyk(75.6%, 73.2%, 0%, 50.2%)
CIE-LAB	lab(19.91, 32.14, -52.50)
CIE-LCH	lch(19.91, 61.55, 301.47°)
OKLab	oklab(32.3% 0.0069 -0.1519)
OKLCH	oklch(32.3% 0.152 272.6)
XYZ	xyz(4.9666, 2.9672, 20.3855)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F227F #7F7C1F

analogous

#1F527F #1F227F #4C1F7F

triadic

#1F227F #7F1F22 #227F1F

tetradic

#1F227F #7F1F52 #7F7C1F #1F7F4C

square

#1F227F #7F1F52 #7F7C1F #1F7F4C

split-complementary

#1F227F #7F4C1F #527F1F

monochromatic

#07081D #13154E #1F227F #2B2FB0 #464BD2

Accessibility & contrast

On white

13.18

#1F227F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1F227F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F227F

13.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F227F	#FFFFFF	#000000	##FFFFFF
##1F227F	1.00	13.18	1.59	13.18
#FFFFFF	13.18	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003582

Deuteranopia (green-blind)

#002B7D

Tritanopia (blue-blind)

#003C4E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f227f;
/* rgb */ color: rgb(31, 34, 127);
/* oklch */ color: oklch(32.3% 0.152 272.6);

Tailwind

colors: {
  custom: {
    50: '#6b5ea5',
    500: '#1f227f',
    950: '#000000',
  },
}

SCSS

$custom: #1f227f;
$custom-light: #6b5ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f227f",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 127
  },
  "hsl": {
    "h": 238.125,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.323,
    "c": 0.15203,
    "h": 272.6
  },
  "luminance": 0.02968
}

Semantic roles & 50–950 ramp

primary

#1F227F

secondary

#B2AF48

accent

#DF44E4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1F227F

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

Preview Lab → · Contrast checker → · Palette generator →