#1F3976#1F3976

#1F3976 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 36.1% C 0.109 H 264.3°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#1F3976
RGB	rgb(31, 57, 118)
HSL	hsl(222, 58%, 29%)
HSV	hsv(222, 74%, 46%)
CMYK	cmyk(73.7%, 51.7%, 0%, 53.7%)
CIE-LAB	lab(25.34, 12.81, -37.95)
CIE-LCH	lch(25.34, 40.05, 288.66°)
OKLab	oklab(36.08% -0.0109 -0.1089)
OKLCH	oklch(36.08% 0.109 264.3)
XYZ	xyz(5.2971, 4.5250, 17.7303)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3976 #765C1F

analogous

#1F6576 #1F3976 #311F76

triadic

#1F3976 #761F39 #39761F

tetradic

#1F3976 #761F65 #765C1F #1F7631

square

#1F3976 #761F65 #765C1F #1F7631

split-complementary

#1F3976 #76311F #65761F

monochromatic

#060C18 #122246 #1F3976 #2C50A6 #426CCD

Accessibility & contrast

On white

11.02

#1F3976 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1F3976 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3976

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3976	#FFFFFF	#000000	##FFFFFF
##1F3976	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164078

Deuteranopia (green-blind)

#003875

Tritanopia (blue-blind)

#004752

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f3976;
/* rgb */ color: rgb(31, 57, 118);
/* oklch */ color: oklch(36.1% 0.109 264.3);

Tailwind

colors: {
  custom: {
    50: '#676e9e',
    500: '#1f3976',
    950: '#000000',
  },
}

SCSS

$custom: #1f3976;
$custom-light: #676e9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3976",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 118
  },
  "hsl": {
    "h": 222.069,
    "s": 58.389,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36081,
    "c": 0.10948,
    "h": 264.3
  },
  "luminance": 0.04526
}

Semantic roles & 50–950 ramp

primary

#1F3976

secondary

#AA8C47

accent

#B346E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #1F3976

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

Preview Lab → · Contrast checker → · Palette generator →