#1F227D#1F227D

#1F227D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.1% C 0.149 H 272.8°. Best body text is #FFFFFF at 13.26:1 contrast (WCAG AA passes).

Color values

HEX	#1F227D
RGB	rgb(31, 34, 125)
HSL	hsl(238, 60%, 31%)
HSV	hsv(238, 75%, 49%)
CMYK	cmyk(75.2%, 72.8%, 0%, 51%)
CIE-LAB	lab(19.70, 31.41, -51.57)
CIE-LCH	lch(19.70, 60.38, 301.34°)
OKLab	oklab(32.09% 0.0072 -0.1492)
OKLCH	oklch(32.09% 0.149 272.8)
XYZ	xyz(4.8375, 2.9155, 19.7059)
Luminance	0.0292 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F227D #7D7A1F

analogous

#1F517D #1F227D #4B1F7D

triadic

#1F227D #7D1F22 #227D1F

tetradic

#1F227D #7D1F51 #7D7A1F #1F7D4B

square

#1F227D #7D1F51 #7D7A1F #1F7D4B

split-complementary

#1F227D #7D4B1F #517D1F

monochromatic

#07071B #13154C #1F227D #2B2FAE #454AD1

Accessibility & contrast

On white

13.26

#1F227D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1F227D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F227D

13.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F227D	#FFFFFF	#000000	##FFFFFF
##1F227D	1.00	13.26	1.58	13.26
#FFFFFF	13.26	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003480

Deuteranopia (green-blind)

#002B7B

Tritanopia (blue-blind)

#003B4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f227d;
/* rgb */ color: rgb(31, 34, 125);
/* oklch */ color: oklch(32.1% 0.149 272.8);

Tailwind

colors: {
  custom: {
    50: '#6b5ea4',
    500: '#1f227d',
    950: '#000000',
  },
}

SCSS

$custom: #1f227d;
$custom-light: #6b5ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f227d",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 125
  },
  "hsl": {
    "h": 238.085,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.32087,
    "c": 0.14935,
    "h": 272.8
  },
  "luminance": 0.02916
}

Semantic roles & 50–950 ramp

primary

#1F227D

secondary

#B0AD48

accent

#DE44E3

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1F227D

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

Preview Lab → · Contrast checker → · Palette generator →