#1F4290#1F4290

#1F4290 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.2% C 0.136 H 263.4°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#1F4290
RGB	rgb(31, 66, 144)
HSL	hsl(221, 65%, 34%)
HSV	hsv(221, 78%, 56%)
CMYK	cmyk(78.5%, 54.2%, 0%, 43.5%)
CIE-LAB	lab(29.91, 16.99, -46.77)
CIE-LCH	lch(29.91, 49.76, 289.97°)
OKLab	oklab(40.17% -0.0157 -0.1347)
OKLCH	oklch(40.17% 0.136 263.4)
XYZ	xyz(7.5455, 6.2005, 27.1793)
Luminance	0.0620 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4290 #906D1F

analogous

#1F7B90 #1F4290 #351F90

triadic

#1F4290 #901F42 #42901F

tetradic

#1F4290 #901F7B #906D1F #1F9035

square

#1F4290 #901F7B #906D1F #1F9035

split-complementary

#1F4290 #90351F #7B901F

monochromatic

#09142B #142B5E #1F4290 #2A59C2 #507BD9

Accessibility & contrast

On white

9.37

#1F4290 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1F4290 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4290

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4290	#FFFFFF	#000000	##FFFFFF
##1F4290	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#084C93

Deuteranopia (green-blind)

#00428E

Tritanopia (blue-blind)

#005562

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f4290;
/* rgb */ color: rgb(31, 66, 144);
/* oklch */ color: oklch(40.2% 0.136 263.4);

Tailwind

colors: {
  custom: {
    50: '#6d75b1',
    500: '#1f4290',
    950: '#000000',
  },
}

SCSS

$custom: #1f4290;
$custom-light: #6d75b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4290",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 144
  },
  "hsl": {
    "h": 221.416,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.40175,
    "c": 0.13564,
    "h": 263.4
  },
  "luminance": 0.06201
}

Semantic roles & 50–950 ramp

primary

#1F4290

secondary

#BC9A4E

accent

#B440E8

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4290

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

Preview Lab → · Contrast checker → · Palette generator →