#1F2A9F#1F2A9F

#1F2A9F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.0% C 0.185 H 269.5°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A9F
RGB	rgb(31, 42, 159)
HSL	hsl(235, 67%, 37%)
HSV	hsv(235, 81%, 62%)
CMYK	cmyk(80.5%, 73.6%, 0%, 37.6%)
CIE-LAB	lab(25.11, 38.69, -63.81)
CIE-LCH	lch(25.11, 74.62, 301.23°)
OKLab	oklab(37.04% -0.0015 -0.1848)
OKLCH	oklch(37.04% 0.185 269.5)
XYZ	xyz(7.6489, 4.4496, 33.2499)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A9F #9F941F

analogous

#1F6A9F #1F2A9F #541F9F

triadic

#1F2A9F #9F1F2A #2A9F1F

tetradic

#1F2A9F #9F1F6A #9F941F #1F9F54

square

#1F2A9F #9F1F6A #9F941F #1F9F54

split-complementary

#1F2A9F #9F541F #6A9F1F

monochromatic

#0B0F39 #151C6C #1F2A9F #2938D2 #5A65DF

Accessibility & contrast

On white

11.11

#1F2A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1F2A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A9F

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A9F	#FFFFFF	#000000	##FFFFFF
##1F2A9F	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A2

Deuteranopia (green-blind)

#00359D

Tritanopia (blue-blind)

#004C62

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f2a9f;
/* rgb */ color: rgb(31, 42, 159);
/* oklch */ color: oklch(37.0% 0.185 269.5);

Tailwind

colors: {
  custom: {
    50: '#7364bd',
    500: '#1f2a9f',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a9f;
$custom-light: #7364bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a9f",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 159
  },
  "hsl": {
    "h": 234.844,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.37039,
    "c": 0.18486,
    "h": 269.5
  },
  "luminance": 0.0445
}

Semantic roles & 50–950 ramp

primary

#1F2A9F

secondary

#C3B957

accent

#DB3EEA

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #1F2A9F

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

Preview Lab → · Contrast checker → · Palette generator →