#1F2F77#1F2F77

#1F2F77 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.0% C 0.124 H 269.2°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F77
RGB	rgb(31, 47, 119)
HSL	hsl(229, 59%, 29%)
HSV	hsv(229, 74%, 47%)
CMYK	cmyk(73.9%, 60.5%, 0%, 53.3%)
CIE-LAB	lab(22.50, 20.28, -43.18)
CIE-LCH	lch(22.50, 47.70, 295.15°)
OKLab	oklab(33.96% -0.0018 -0.1245)
OKLCH	oklch(33.96% 0.125 269.2)
XYZ	xyz(4.9102, 3.6557, 17.8960)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F77 #77671F

analogous

#1F5B77 #1F2F77 #3B1F77

triadic

#1F2F77 #771F2F #2F771F

tetradic

#1F2F77 #771F5B #77671F #1F773B

square

#1F2F77 #771F5B #77671F #1F773B

split-complementary

#1F2F77 #773B1F #5B771F

monochromatic

#060A18 #121C46 #1F2F77 #2C42A8 #435CCE

Accessibility & contrast

On white

12.13

#1F2F77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F2F77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F77

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F77	#FFFFFF	#000000	##FFFFFF
##1F2F77	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A79

Deuteranopia (green-blind)

#003276

Tritanopia (blue-blind)

#00414E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2f77;
/* rgb */ color: rgb(31, 47, 119);
/* oklch */ color: oklch(34.0% 0.124 269.2);

Tailwind

colors: {
  custom: {
    50: '#68679f',
    500: '#1f2f77',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f77;
$custom-light: #68679f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f77",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 119
  },
  "hsl": {
    "h": 229.091,
    "s": 58.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.33964,
    "c": 0.1245,
    "h": 269.2
  },
  "luminance": 0.03656
}

Semantic roles & 50–950 ramp

primary

#1F2F77

secondary

#AB9847

accent

#C646E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #1F2F77

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

Preview Lab → · Contrast checker → · Palette generator →