#1F3476#1F3476

#1F3476 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 35.0% C 0.116 H 266.9°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F3476
RGB	rgb(31, 52, 118)
HSL	hsl(226, 58%, 29%)
HSV	hsv(226, 74%, 46%)
CMYK	cmyk(73.7%, 55.9%, 0%, 53.7%)
CIE-LAB	lab(23.85, 16.34, -40.34)
CIE-LCH	lch(23.85, 43.53, 292.05°)
OKLab	oklab(34.95% -0.0063 -0.1161)
OKLCH	oklch(34.95% 0.116 266.9)
XYZ	xyz(5.0619, 4.0548, 17.6519)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3476 #76611F

analogous

#1F6076 #1F3476 #361F76

triadic

#1F3476 #761F34 #34761F

tetradic

#1F3476 #761F60 #76611F #1F7636

square

#1F3476 #761F60 #76611F #1F7636

split-complementary

#1F3476 #76361F #60761F

monochromatic

#060B18 #121F46 #1F3476 #2C49A6 #4264CD

Accessibility & contrast

On white

11.60

#1F3476 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F3476 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3476

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3476	#FFFFFF	#000000	##FFFFFF
##1F3476	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#043D78

Deuteranopia (green-blind)

#003575

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f3476;
/* rgb */ color: rgb(31, 52, 118);
/* oklch */ color: oklch(35.0% 0.116 266.9);

Tailwind

colors: {
  custom: {
    50: '#676b9e',
    500: '#1f3476',
    950: '#000000',
  },
}

SCSS

$custom: #1f3476;
$custom-light: #676b9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3476",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 118
  },
  "hsl": {
    "h": 225.517,
    "s": 58.389,
    "l": 29.216
  },
  "oklch": {
    "l": 0.34954,
    "c": 0.11625,
    "h": 266.9
  },
  "luminance": 0.04055
}

Semantic roles & 50–950 ramp

primary

#1F3476

secondary

#AA9247

accent

#BC46E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #1F3476

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

Preview Lab → · Contrast checker → · Palette generator →