#1F3594#1F3594

#1F3594 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.8% C 0.158 H 267.7°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#1F3594
RGB	rgb(31, 53, 148)
HSL	hsl(229, 65%, 35%)
HSV	hsv(229, 79%, 58%)
CMYK	cmyk(79.1%, 64.2%, 0%, 42%)
CIE-LAB	lab(26.66, 27.49, -54.52)
CIE-LCH	lch(26.66, 61.06, 296.76°)
OKLab	oklab(37.84% -0.0063 -0.1577)
OKLCH	oklch(37.84% 0.158 267.7)
XYZ	xyz(7.1816, 4.9748, 28.5930)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3594 #947E1F

analogous

#1F6F94 #1F3594 #441F94

triadic

#1F3594 #941F35 #35941F

tetradic

#1F3594 #941F6F #947E1F #1F9444

square

#1F3594 #941F6F #947E1F #1F9444

split-complementary

#1F3594 #94441F #6F941F

monochromatic

#0A112F #142361 #1F3594 #2A47C7 #536CDB

Accessibility & contrast

On white

10.53

#1F3594 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1F3594 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3594

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3594	#FFFFFF	#000000	##FFFFFF
##1F3594	1.00	10.53	2.00	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004597

Deuteranopia (green-blind)

#003A92

Tritanopia (blue-blind)

#004E5F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f3594;
/* rgb */ color: rgb(31, 53, 148);
/* oklch */ color: oklch(37.8% 0.158 267.7);

Tailwind

colors: {
  custom: {
    50: '#6f6cb4',
    500: '#1f3594',
    950: '#000000',
  },
}

SCSS

$custom: #1f3594;
$custom-light: #6f6cb4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3594",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 148
  },
  "hsl": {
    "h": 228.718,
    "s": 65.363,
    "l": 35.098
  },
  "oklch": {
    "l": 0.37844,
    "c": 0.15781,
    "h": 267.7
  },
  "luminance": 0.04976
}

Semantic roles & 50–950 ramp

primary

#1F3594

secondary

#BEAA51

accent

#C93FE8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1F3594

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

Preview Lab → · Contrast checker → · Palette generator →