#1F2A8F#1F2A8F

#1F2A8F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.3% C 0.164 H 270.2°. Best body text is #FFFFFF at 11.76:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A8F
RGB	rgb(31, 42, 143)
HSL	hsl(234, 64%, 34%)
HSV	hsv(234, 78%, 56%)
CMYK	cmyk(78.3%, 70.6%, 0%, 43.9%)
CIE-LAB	lab(23.44, 32.89, -56.73)
CIE-LCH	lch(23.44, 65.57, 300.10°)
OKLab	oklab(35.34% 0.0004 -0.1642)
OKLCH	oklch(35.34% 0.164 270.2)
XYZ	xyz(6.3493, 3.9297, 26.4052)
Luminance	0.0393 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A8F #8F841F

analogous

#1F628F #1F2A8F #4C1F8F

triadic

#1F2A8F #8F1F2A #2A8F1F

tetradic

#1F2A8F #8F1F62 #8F841F #1F8F4C

square

#1F2A8F #8F1F62 #8F841F #1F8F4C

split-complementary

#1F2A8F #8F4C1F #628F1F

monochromatic

#090C2A #141B5D #1F2A8F #2A39C1 #4F5DD9

Accessibility & contrast

On white

11.76

#1F2A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1F2A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A8F

11.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A8F	#FFFFFF	#000000	##FFFFFF
##1F2A8F	1.00	11.76	1.79	11.76
#FFFFFF	11.76	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D92

Deuteranopia (green-blind)

#00328D

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2a8f;
/* rgb */ color: rgb(31, 42, 143);
/* oklch */ color: oklch(35.3% 0.164 270.2);

Tailwind

colors: {
  custom: {
    50: '#6e64b1',
    500: '#1f2a8f',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a8f;
$custom-light: #6e64b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a8f",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 143
  },
  "hsl": {
    "h": 234.107,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.3534,
    "c": 0.16421,
    "h": 270.2
  },
  "luminance": 0.0393
}

Semantic roles & 50–950 ramp

primary

#1F2A8F

secondary

#BCB14E

accent

#D740E7

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1F2A8F

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

Preview Lab → · Contrast checker → · Palette generator →