#1F3E77#1F3E77

#1F3E77 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.3% C 0.104 H 261.4°. Best body text is #FFFFFF at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E77
RGB	rgb(31, 62, 119)
HSL	hsl(219, 59%, 29%)
HSV	hsv(219, 74%, 47%)
CMYK	cmyk(73.9%, 47.9%, 0%, 53.3%)
CIE-LAB	lab(26.93, 9.72, -36.02)
CIE-LCH	lch(26.93, 37.31, 285.10°)
OKLab	oklab(37.32% -0.0156 -0.1032)
OKLCH	oklch(37.32% 0.104 261.4)
XYZ	xyz(5.6163, 5.0679, 18.1314)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E77 #77581F

analogous

#1F6A77 #1F3E77 #2C1F77

triadic

#1F3E77 #771F3E #3E771F

tetradic

#1F3E77 #771F6A #77581F #1F772C

square

#1F3E77 #771F6A #77581F #1F772C

split-complementary

#1F3E77 #772C1F #6A771F

monochromatic

#060D18 #122546 #1F3E77 #2C57A8 #4374CE

Accessibility & contrast

On white

10.43

#1F3E77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1F3E77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E77

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E77	#FFFFFF	#000000	##FFFFFF
##1F3E77	1.00	10.43	2.01	10.43
#FFFFFF	10.43	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214479

Deuteranopia (green-blind)

#0E3C76

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f3e77;
/* rgb */ color: rgb(31, 62, 119);
/* oklch */ color: oklch(37.3% 0.104 261.4);

Tailwind

colors: {
  custom: {
    50: '#67729f',
    500: '#1f3e77',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e77;
$custom-light: #67729f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e77",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 119
  },
  "hsl": {
    "h": 218.864,
    "s": 58.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37322,
    "c": 0.10436,
    "h": 261.4
  },
  "luminance": 0.05068
}

Semantic roles & 50–950 ramp

primary

#1F3E77

secondary

#AB8847

accent

#AB46E2

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #1F3E77

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

Preview Lab → · Contrast checker → · Palette generator →