#1F299A#1F299A

#1F299A is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.3% C 0.180 H 269.9°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#1F299A
RGB	rgb(31, 41, 154)
HSL	hsl(235, 66%, 36%)
HSV	hsv(235, 80%, 60%)
CMYK	cmyk(79.9%, 73.4%, 0%, 39.6%)
CIE-LAB	lab(24.35, 37.52, -62.00)
CIE-LCH	lch(24.35, 72.47, 301.18°)
OKLab	oklab(36.34% -0.0004 -0.1796)
OKLCH	oklch(36.34% 0.18 269.9)
XYZ	xyz(7.1888, 4.2095, 30.9992)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F299A #9A901F

analogous

#1F679A #1F299A #531F9A

triadic

#1F299A #9A1F29 #299A1F

tetradic

#1F299A #9A1F67 #9A901F #1F9A53

square

#1F299A #9A1F67 #9A901F #1F9A53

split-complementary

#1F299A #9A531F #679A1F

monochromatic

#0A0E34 #151B67 #1F299A #2937CD #5661DD

Accessibility & contrast

On white

11.40

#1F299A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1F299A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F299A

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F299A	#FFFFFF	#000000	##FFFFFF
##1F299A	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00409D

Deuteranopia (green-blind)

#003498

Tritanopia (blue-blind)

#00495F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f299a;
/* rgb */ color: rgb(31, 41, 154);
/* oklch */ color: oklch(36.3% 0.180 269.9);

Tailwind

colors: {
  custom: {
    50: '#7163b9',
    500: '#1f299a',
    950: '#000000',
  },
}

SCSS

$custom: #1f299a;
$custom-light: #7163b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f299a",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 154
  },
  "hsl": {
    "h": 235.122,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36341,
    "c": 0.17957,
    "h": 269.9
  },
  "luminance": 0.0421
}

Semantic roles & 50–950 ramp

primary

#1F299A

secondary

#C1B854

accent

#DC3EE9

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1F299A

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

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