#1F2B77#1F2B77

#1F2B77 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.1% C 0.130 H 270.6°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B77
RGB	rgb(31, 43, 119)
HSL	hsl(232, 59%, 29%)
HSV	hsv(232, 74%, 47%)
CMYK	cmyk(73.9%, 63.9%, 0%, 53.3%)
CIE-LAB	lab(21.40, 23.08, -44.97)
CIE-LCH	lch(21.40, 50.55, 297.16°)
OKLab	oklab(33.15% 0.0014 -0.1298)
OKLCH	oklch(33.15% 0.13 270.6)
XYZ	xyz(4.7576, 3.3505, 17.8452)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B77 #776B1F

analogous

#1F5777 #1F2B77 #3F1F77

triadic

#1F2B77 #771F2B #2B771F

tetradic

#1F2B77 #771F57 #776B1F #1F773F

square

#1F2B77 #771F57 #776B1F #1F773F

split-complementary

#1F2B77 #773F1F #57771F

monochromatic

#060918 #121946 #1F2B77 #2C3DA8 #4356CE

Accessibility & contrast

On white

12.57

#1F2B77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F2B77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B77

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B77	#FFFFFF	#000000	##FFFFFF
##1F2B77	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003779

Deuteranopia (green-blind)

#002F76

Tritanopia (blue-blind)

#003E4C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2b77;
/* rgb */ color: rgb(31, 43, 119);
/* oklch */ color: oklch(33.1% 0.130 270.6);

Tailwind

colors: {
  custom: {
    50: '#68649f',
    500: '#1f2b77',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b77;
$custom-light: #68649f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b77",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 119
  },
  "hsl": {
    "h": 231.818,
    "s": 58.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.33145,
    "c": 0.12983,
    "h": 270.6
  },
  "luminance": 0.03351
}

Semantic roles & 50–950 ramp

primary

#1F2B77

secondary

#AB9D47

accent

#CD46E2

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2B77

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

Preview Lab → · Contrast checker → · Palette generator →