#1F229E#1F229E

#1F229E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.8% C 0.191 H 270.5°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#1F229E
RGB	rgb(31, 34, 158)
HSL	hsl(239, 67%, 37%)
HSV	hsv(239, 80%, 62%)
CMYK	cmyk(80.4%, 78.5%, 0%, 38%)
CIE-LAB	lab(23.35, 42.99, -66.10)
CIE-LCH	lch(23.35, 78.86, 303.04°)
OKLab	oklab(35.76% 0.0015 -0.1914)
OKLCH	oklch(35.76% 0.191 270.5)
XYZ	xyz(7.3066, 3.9032, 32.7094)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F229E #9E9B1F

analogous

#1F619E #1F229E #5C1F9E

triadic

#1F229E #9E1F22 #229E1F

tetradic

#1F229E #9E1F61 #9E9B1F #1F9E5C

square

#1F229E #9E1F61 #9E9B1F #1F9E5C

split-complementary

#1F229E #9E5C1F #619E1F

monochromatic

#0B0C38 #15176B #1F229E #292DD1 #595CDE

Accessibility & contrast

On white

11.79

#1F229E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1F229E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F229E

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F229E	#FFFFFF	#000000	##FFFFFF
##1F229E	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA2

Deuteranopia (green-blind)

#00319C

Tritanopia (blue-blind)

#00485F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f229e;
/* rgb */ color: rgb(31, 34, 158);
/* oklch */ color: oklch(35.8% 0.191 270.5);

Tailwind

colors: {
  custom: {
    50: '#735fbc',
    500: '#1f229e',
    950: '#000000',
  },
}

SCSS

$custom: #1f229e;
$custom-light: #735fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f229e",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 158
  },
  "hsl": {
    "h": 238.583,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.35759,
    "c": 0.19145,
    "h": 270.5
  },
  "luminance": 0.03904
}

Semantic roles & 50–950 ramp

primary

#1F229E

secondary

#C2C056

accent

#E63EEA

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1F229E

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

Preview Lab → · Contrast checker → · Palette generator →