#1F3089#1F3089

#1F3089 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.8% C 0.149 H 268.9°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#1F3089
RGB	rgb(31, 48, 137)
HSL	hsl(230, 63%, 33%)
HSV	hsv(230, 77%, 54%)
CMYK	cmyk(77.4%, 65%, 0%, 46.3%)
CIE-LAB	lab(24.36, 26.63, -51.49)
CIE-LCH	lch(24.36, 57.97, 297.35°)
OKLab	oklab(35.83% -0.0027 -0.1489)
OKLCH	oklch(35.83% 0.149 268.9)
XYZ	xyz(6.1358, 4.2107, 24.1514)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3089 #89781F

analogous

#1F6589 #1F3089 #431F89

triadic

#1F3089 #891F30 #30891F

tetradic

#1F3089 #891F65 #89781F #1F8943

square

#1F3089 #891F65 #89781F #1F8943

split-complementary

#1F3089 #89431F #65891F

monochromatic

#080D25 #141F57 #1F3089 #2A41BB #4C62D6

Accessibility & contrast

On white

11.40

#1F3089 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1F3089 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3089

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3089	#FFFFFF	#000000	##FFFFFF
##1F3089	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)

#003F8C

Deuteranopia (green-blind)

#003587

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f3089;
/* rgb */ color: rgb(31, 48, 137);
/* oklch */ color: oklch(35.8% 0.149 268.9);

Tailwind

colors: {
  custom: {
    50: '#6c68ac',
    500: '#1f3089',
    950: '#000000',
  },
}

SCSS

$custom: #1f3089;
$custom-light: #6c68ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3089",
  "rgb": {
    "r": 31,
    "g": 48,
    "b": 137
  },
  "hsl": {
    "h": 230.377,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35834,
    "c": 0.14889,
    "h": 268.9
  },
  "luminance": 0.04211
}

Semantic roles & 50–950 ramp

primary

#1F3089

secondary

#B9A74B

accent

#CC42E6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1F3089

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

Preview Lab → · Contrast checker → · Palette generator →