#1F227C#1F227C

#1F227C is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.0% C 0.148 H 272.9°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#1F227C
RGB	rgb(31, 34, 124)
HSL	hsl(238, 60%, 30%)
HSV	hsv(238, 75%, 49%)
CMYK	cmyk(75%, 72.6%, 0%, 51.4%)
CIE-LAB	lab(19.60, 31.04, -51.11)
CIE-LCH	lch(19.60, 59.80, 301.27°)
OKLab	oklab(31.98% 0.0074 -0.1478)
OKLCH	oklch(31.98% 0.148 272.9)
XYZ	xyz(4.7740, 2.8901, 19.3711)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F227C #7C791F

analogous

#1F507C #1F227C #4B1F7C

triadic

#1F227C #7C1F22 #227C1F

tetradic

#1F227C #7C1F50 #7C791F #1F7C4B

square

#1F227C #7C1F50 #7C791F #1F7C4B

split-complementary

#1F227C #7C4B1F #507C1F

monochromatic

#07071A #13154B #1F227C #2B2FAD #4549D0

Accessibility & contrast

On white

13.31

#1F227C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1F227C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F227C

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F227C	#FFFFFF	#000000	##FFFFFF
##1F227C	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347F

Deuteranopia (green-blind)

#002B7A

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f227c;
/* rgb */ color: rgb(31, 34, 124);
/* oklch */ color: oklch(32.0% 0.148 272.9);

Tailwind

colors: {
  custom: {
    50: '#6a5ea3',
    500: '#1f227c',
    950: '#000000',
  },
}

SCSS

$custom: #1f227c;
$custom-light: #6a5ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f227c",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 124
  },
  "hsl": {
    "h": 238.065,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.31981,
    "c": 0.148,
    "h": 272.9
  },
  "luminance": 0.02891
}

Semantic roles & 50–950 ramp

primary

#1F227C

secondary

#AFAC48

accent

#DE45E3

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1F227C

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

Preview Lab → · Contrast checker → · Palette generator →