#1F229A#1F229A

#1F229A is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.3% C 0.187 H 270.7°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F229A
RGB	rgb(31, 34, 154)
HSL	hsl(239, 66%, 36%)
HSV	hsv(239, 80%, 60%)
CMYK	cmyk(79.9%, 77.9%, 0%, 39.6%)
CIE-LAB	lab(22.89, 41.64, -64.42)
CIE-LCH	lch(22.89, 76.71, 302.88°)
OKLab	oklab(35.3% 0.0023 -0.1865)
OKLCH	oklch(35.3% 0.187 270.7)
XYZ	xyz(6.9679, 3.7677, 30.9256)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F229A #9A971F

analogous

#1F609A #1F229A #5A1F9A

triadic

#1F229A #9A1F22 #229A1F

tetradic

#1F229A #9A1F60 #9A971F #1F9A5A

square

#1F229A #9A1F60 #9A971F #1F9A5A

split-complementary

#1F229A #9A5A1F #609A1F

monochromatic

#0A0C34 #151767 #1F229A #292DCD #565ADD

Accessibility & contrast

On white

11.98

#1F229A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1F229A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F229A

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F229A	#FFFFFF	#000000	##FFFFFF
##1F229A	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D9D

Deuteranopia (green-blind)

#003098

Tritanopia (blue-blind)

#00465D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f229a;
/* rgb */ color: rgb(31, 34, 154);
/* oklch */ color: oklch(35.3% 0.187 270.7);

Tailwind

colors: {
  custom: {
    50: '#725fb9',
    500: '#1f229a',
    950: '#000000',
  },
}

SCSS

$custom: #1f229a;
$custom-light: #725fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f229a",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 154
  },
  "hsl": {
    "h": 238.537,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.353,
    "c": 0.18656,
    "h": 270.7
  },
  "luminance": 0.03768
}

Semantic roles & 50–950 ramp

primary

#1F229A

secondary

#C1BE54

accent

#E53EE9

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1F229A

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

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