#1F368E#1F368E

#1F368E is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.5% C 0.148 H 267.3°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#1F368E
RGB	rgb(31, 54, 142)
HSL	hsl(228, 64%, 34%)
HSV	hsv(228, 78%, 56%)
CMYK	cmyk(78.2%, 62%, 0%, 44.3%)
CIE-LAB	lab(26.40, 24.47, -51.26)
CIE-LCH	lch(26.40, 56.80, 295.52°)
OKLab	oklab(37.48% -0.0069 -0.1481)
OKLCH	oklch(37.48% 0.148 267.3)
XYZ	xyz(6.7650, 4.8819, 26.1717)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F368E #8E771F

analogous

#1F6E8E #1F368E #401F8E

triadic

#1F368E #8E1F36 #368E1F

tetradic

#1F368E #8E1F6E #8E771F #1F8E40

square

#1F368E #8E1F6E #8E771F #1F8E40

split-complementary

#1F368E #8E401F #6E8E1F

monochromatic

#09102A #14235C #1F368E #2A49C0 #4F6BD9

Accessibility & contrast

On white

10.62

#1F368E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1F368E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F368E

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F368E	#FFFFFF	#000000	##FFFFFF
##1F368E	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004491

Deuteranopia (green-blind)

#00398C

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1f368e;
/* rgb */ color: rgb(31, 54, 142);
/* oklch */ color: oklch(37.5% 0.148 267.3);

Tailwind

colors: {
  custom: {
    50: '#6d6cb0',
    500: '#1f368e',
    950: '#000000',
  },
}

SCSS

$custom: #1f368e;
$custom-light: #6d6cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f368e",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 142
  },
  "hsl": {
    "h": 227.568,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.37481,
    "c": 0.14827,
    "h": 267.3
  },
  "luminance": 0.04883
}

Semantic roles & 50–950 ramp

primary

#1F368E

secondary

#BBA54D

accent

#C541E7

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1F368E

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

Preview Lab → · Contrast checker → · Palette generator →