#1F2976#1F2976

#1F2976 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.131 H 271.3°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F2976
RGB	rgb(31, 41, 118)
HSL	hsl(233, 58%, 29%)
HSV	hsv(233, 74%, 46%)
CMYK	cmyk(73.7%, 65.3%, 0%, 53.7%)
CIE-LAB	lab(20.77, 24.08, -45.36)
CIE-LCH	lch(20.77, 51.35, 297.96°)
OKLab	oklab(32.65% 0.0031 -0.131)
OKLCH	oklch(32.65% 0.131 271.3)
XYZ	xyz(4.6269, 3.1847, 17.5069)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2976 #766C1F

analogous

#1F5576 #1F2976 #411F76

triadic

#1F2976 #761F29 #29761F

tetradic

#1F2976 #761F55 #766C1F #1F7641

square

#1F2976 #761F55 #766C1F #1F7641

split-complementary

#1F2976 #76411F #55761F

monochromatic

#060818 #121846 #1F2976 #2C3AA6 #4252CD

Accessibility & contrast

On white

12.83

#1F2976 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1F2976 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2976

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2976	#FFFFFF	#000000	##FFFFFF
##1F2976	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003678

Deuteranopia (green-blind)

#002E75

Tritanopia (blue-blind)

#003D4B

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2976;
/* rgb */ color: rgb(31, 41, 118);
/* oklch */ color: oklch(32.7% 0.131 271.3);

Tailwind

colors: {
  custom: {
    50: '#68629e',
    500: '#1f2976',
    950: '#000000',
  },
}

SCSS

$custom: #1f2976;
$custom-light: #68629e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2976",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 118
  },
  "hsl": {
    "h": 233.103,
    "s": 58.389,
    "l": 29.216
  },
  "oklch": {
    "l": 0.32654,
    "c": 0.13101,
    "h": 271.3
  },
  "luminance": 0.03185
}

Semantic roles & 50–950 ramp

primary

#1F2976

secondary

#AA9E47

accent

#D046E2

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2976

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

Preview Lab → · Contrast checker → · Palette generator →