#1F229D#1F229D

#1F229D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.6% C 0.190 H 270.5°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F229D
RGB	rgb(31, 34, 157)
HSL	hsl(239, 67%, 37%)
HSV	hsv(239, 80%, 62%)
CMYK	cmyk(80.3%, 78.3%, 0%, 38.4%)
CIE-LAB	lab(23.23, 42.66, -65.68)
CIE-LCH	lch(23.23, 78.32, 303.00°)
OKLab	oklab(35.64% 0.0017 -0.1902)
OKLCH	oklch(35.64% 0.19 270.5)
XYZ	xyz(7.2208, 3.8689, 32.2580)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F229D #9D9A1F

analogous

#1F619D #1F229D #5B1F9D

triadic

#1F229D #9D1F22 #229D1F

tetradic

#1F229D #9D1F61 #9D9A1F #1F9D5B

square

#1F229D #9D1F61 #9D9A1F #1F9D5B

split-complementary

#1F229D #9D5B1F #619D1F

monochromatic

#0B0C37 #15176A #1F229D #292DD0 #585CDE

Accessibility & contrast

On white

11.84

#1F229D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F229D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F229D

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F229D	#FFFFFF	#000000	##FFFFFF
##1F229D	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA0

Deuteranopia (green-blind)

#00319B

Tritanopia (blue-blind)

#00475F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f229d;
/* rgb */ color: rgb(31, 34, 157);
/* oklch */ color: oklch(35.6% 0.190 270.5);

Tailwind

colors: {
  custom: {
    50: '#735fbb',
    500: '#1f229d',
    950: '#000000',
  },
}

SCSS

$custom: #1f229d;
$custom-light: #735fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f229d",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 157
  },
  "hsl": {
    "h": 238.571,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.35644,
    "c": 0.19023,
    "h": 270.5
  },
  "luminance": 0.0387
}

Semantic roles & 50–950 ramp

primary

#1F229D

secondary

#C2BF56

accent

#E63EEA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1F229D

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

Preview Lab → · Contrast checker → · Palette generator →