#1F478D#1F478D

#1F478D is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.1% C 0.125 H 260.7°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F478D
RGB	rgb(31, 71, 141)
HSL	hsl(218, 64%, 34%)
HSV	hsv(218, 78%, 55%)
CMYK	cmyk(78%, 49.6%, 0%, 44.7%)
CIE-LAB	lab(31.16, 12.36, -42.91)
CIE-LCH	lch(31.16, 44.65, 286.07°)
OKLab	oklab(41.06% -0.0202 -0.1233)
OKLCH	oklch(41.06% 0.125 260.7)
XYZ	xyz(7.6243, 6.7200, 26.0894)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F478D #8D651F

analogous

#1F7E8D #1F478D #2E1F8D

triadic

#1F478D #8D1F47 #478D1F

tetradic

#1F478D #8D1F7E #8D651F #1F8D2E

square

#1F478D #8D1F7E #8D651F #1F8D2E

split-complementary

#1F478D #8D2E1F #7E8D1F

monochromatic

#091429 #142E5B #1F478D #2A60BF #4E80D8

Accessibility & contrast

On white

8.96

#1F478D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#1F478D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F478D

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F478D	#FFFFFF	#000000	##FFFFFF
##1F478D	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4F90

Deuteranopia (green-blind)

#00458C

Tritanopia (blue-blind)

#005863

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f478d;
/* rgb */ color: rgb(31, 71, 141);
/* oklch */ color: oklch(41.1% 0.125 260.7);

Tailwind

colors: {
  custom: {
    50: '#6c79af',
    500: '#1f478d',
    950: '#000000',
  },
}

SCSS

$custom: #1f478d;
$custom-light: #6c79af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f478d",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 141
  },
  "hsl": {
    "h": 218.182,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.41058,
    "c": 0.12493,
    "h": 260.7
  },
  "luminance": 0.06721
}

Semantic roles & 50–950 ramp

primary

#1F478D

secondary

#BB934D

accent

#AB41E7

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1F478D

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

Preview Lab → · Contrast checker → · Palette generator →