#1F478E#1F478E

#1F478E is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.1% C 0.126 H 260.9°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#1F478E
RGB	rgb(31, 71, 142)
HSL	hsl(218, 64%, 34%)
HSV	hsv(218, 78%, 56%)
CMYK	cmyk(78.2%, 50%, 0%, 44.3%)
CIE-LAB	lab(31.23, 12.76, -43.41)
CIE-LCH	lch(31.23, 45.25, 286.38°)
OKLab	oklab(41.13% -0.02 -0.1247)
OKLCH	oklch(41.13% 0.126 260.9)
XYZ	xyz(7.6990, 6.7499, 26.4830)
Luminance	0.0675 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F478E #8E661F

analogous

#1F7F8E #1F478E #2E1F8E

triadic

#1F478E #8E1F47 #478E1F

tetradic

#1F478E #8E1F7F #8E661F #1F8E2E

square

#1F478E #8E1F7F #8E661F #1F8E2E

split-complementary

#1F478E #8E2E1F #7F8E1F

monochromatic

#09152A #142E5C #1F478E #2A60C0 #4F80D9

Accessibility & contrast

On white

8.94

#1F478E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1F478E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F478E

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F478E	#FFFFFF	#000000	##FFFFFF
##1F478E	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4F91

Deuteranopia (green-blind)

#00458D

Tritanopia (blue-blind)

#005863

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f478e;
/* rgb */ color: rgb(31, 71, 142);
/* oklch */ color: oklch(41.1% 0.126 260.9);

Tailwind

colors: {
  custom: {
    50: '#6c79b0',
    500: '#1f478e',
    950: '#000000',
  },
}

SCSS

$custom: #1f478e;
$custom-light: #6c79b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f478e",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 142
  },
  "hsl": {
    "h": 218.378,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.41134,
    "c": 0.12635,
    "h": 260.9
  },
  "luminance": 0.06751
}

Semantic roles & 50–950 ramp

primary

#1F478E

secondary

#BB944D

accent

#AB41E7

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #1F478E

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

Preview Lab → · Contrast checker → · Palette generator →