#1F2B9A#1F2B9A

#1F2B9A is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.7% C 0.177 H 269.6°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B9A
RGB	rgb(31, 43, 154)
HSL	hsl(234, 66%, 36%)
HSV	hsv(234, 80%, 60%)
CMYK	cmyk(79.9%, 72.1%, 0%, 39.6%)
CIE-LAB	lab(24.80, 36.28, -61.26)
CIE-LCH	lch(24.80, 71.20, 300.64°)
OKLab	oklab(36.66% -0.0013 -0.1774)
OKLCH	oklch(36.66% 0.177 269.6)
XYZ	xyz(7.2597, 4.3513, 31.0229)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B9A #9A8E1F

analogous

#1F699A #1F2B9A #511F9A

triadic

#1F2B9A #9A1F2B #2B9A1F

tetradic

#1F2B9A #9A1F69 #9A8E1F #1F9A51

square

#1F2B9A #9A1F69 #9A8E1F #1F9A51

split-complementary

#1F2B9A #9A511F #699A1F

monochromatic

#0A0F34 #151D67 #1F2B9A #2939CD #5663DD

Accessibility & contrast

On white

11.23

#1F2B9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1F2B9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B9A

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B9A	#FFFFFF	#000000	##FFFFFF
##1F2B9A	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419D

Deuteranopia (green-blind)

#003598

Tritanopia (blue-blind)

#004A5F

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f2b9a;
/* rgb */ color: rgb(31, 43, 154);
/* oklch */ color: oklch(36.7% 0.177 269.6);

Tailwind

colors: {
  custom: {
    50: '#7165b9',
    500: '#1f2b9a',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b9a;
$custom-light: #7165b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b9a",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 154
  },
  "hsl": {
    "h": 234.146,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36663,
    "c": 0.17742,
    "h": 269.6
  },
  "luminance": 0.04352
}

Semantic roles & 50–950 ramp

primary

#1F2B9A

secondary

#C1B654

accent

#D93EE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1F2B9A

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

Preview Lab → · Contrast checker → · Palette generator →