#1F227E#1F227E

#1F227E is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.2% C 0.151 H 272.7°. Best body text is #FFFFFF at 13.22:1 contrast (WCAG AA passes).

Color values

HEX	#1F227E
RGB	rgb(31, 34, 126)
HSL	hsl(238, 61%, 31%)
HSV	hsv(238, 75%, 49%)
CMYK	cmyk(75.4%, 73%, 0%, 50.6%)
CIE-LAB	lab(19.81, 31.77, -52.04)
CIE-LCH	lch(19.81, 60.97, 301.41°)
OKLab	oklab(32.19% 0.0071 -0.1505)
OKLCH	oklch(32.19% 0.151 272.7)
XYZ	xyz(4.9017, 2.9412, 20.0440)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F227E #7E7B1F

analogous

#1F517E #1F227E #4B1F7E

triadic

#1F227E #7E1F22 #227E1F

tetradic

#1F227E #7E1F51 #7E7B1F #1F7E4B

square

#1F227E #7E1F51 #7E7B1F #1F7E4B

split-complementary

#1F227E #7E4B1F #517E1F

monochromatic

#07071C #13154D #1F227E #2B2FAF #464AD1

Accessibility & contrast

On white

13.22

#1F227E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1F227E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F227E

13.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F227E	#FFFFFF	#000000	##FFFFFF
##1F227E	1.00	13.22	1.59	13.22
#FFFFFF	13.22	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003481

Deuteranopia (green-blind)

#002B7C

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f227e;
/* rgb */ color: rgb(31, 34, 126);
/* oklch */ color: oklch(32.2% 0.151 272.7);

Tailwind

colors: {
  custom: {
    50: '#6b5ea4',
    500: '#1f227e',
    950: '#000000',
  },
}

SCSS

$custom: #1f227e;
$custom-light: #6b5ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f227e",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 126
  },
  "hsl": {
    "h": 238.105,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32193,
    "c": 0.1507,
    "h": 272.7
  },
  "luminance": 0.02942
}

Semantic roles & 50–950 ramp

primary

#1F227E

secondary

#B1AE48

accent

#DF44E4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1F227E

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

Preview Lab → · Contrast checker → · Palette generator →