#1F4287#1F4287

#1F4287 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.5% C 0.123 H 262.1°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F4287
RGB	rgb(31, 66, 135)
HSL	hsl(220, 63%, 33%)
HSV	hsv(220, 77%, 53%)
CMYK	cmyk(77%, 51.1%, 0%, 47.1%)
CIE-LAB	lab(29.25, 13.38, -42.29)
CIE-LCH	lch(29.25, 44.36, 287.56°)
OKLab	oklab(39.46% -0.0168 -0.1215)
OKLCH	oklch(39.46% 0.123 262.1)
XYZ	xyz(6.8849, 5.9362, 23.6999)
Luminance	0.0594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4287 #87641F

analogous

#1F7687 #1F4287 #301F87

triadic

#1F4287 #871F42 #42871F

tetradic

#1F4287 #871F76 #87641F #1F8730

square

#1F4287 #871F76 #87641F #1F8730

split-complementary

#1F4287 #87301F #76871F

monochromatic

#081123 #142A55 #1F4287 #2A5AB9 #4B7AD6

Accessibility & contrast

On white

9.60

#1F4287 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1F4287 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4287

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4287	#FFFFFF	#000000	##FFFFFF
##1F4287	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#194A8A

Deuteranopia (green-blind)

#004086

Tritanopia (blue-blind)

#00525E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f4287;
/* rgb */ color: rgb(31, 66, 135);
/* oklch */ color: oklch(39.5% 0.123 262.1);

Tailwind

colors: {
  custom: {
    50: '#6a75aa',
    500: '#1f4287',
    950: '#000000',
  },
}

SCSS

$custom: #1f4287;
$custom-light: #6a75aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4287",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 135
  },
  "hsl": {
    "h": 219.808,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.39461,
    "c": 0.1227,
    "h": 262.1
  },
  "luminance": 0.05937
}

Semantic roles & 50–950 ramp

primary

#1F4287

secondary

#B8934A

accent

#AF42E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1F4287

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

Preview Lab → · Contrast checker → · Palette generator →