#1F4C8D#1F4C8D

#1F4C8D is a dark, moderate blue. Relative luminance 0.074; OKLCH L 42.2% C 0.119 H 258.0°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#1F4C8D
RGB	rgb(31, 76, 141)
HSL	hsl(215, 64%, 34%)
HSV	hsv(215, 78%, 55%)
CMYK	cmyk(78%, 46.1%, 0%, 44.7%)
CIE-LAB	lab(32.66, 8.97, -40.50)
CIE-LCH	lch(32.66, 41.48, 282.48°)
OKLab	oklab(42.21% -0.0246 -0.1161)
OKLCH	oklch(42.21% 0.119 258)
XYZ	xyz(7.9555, 7.3824, 26.1998)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4C8D #8D601F

analogous

#1F838D #1F4C8D #291F8D

triadic

#1F4C8D #8D1F4C #4C8D1F

tetradic

#1F4C8D #8D1F83 #8D601F #1F8D29

square

#1F4C8D #8D1F83 #8D601F #1F8D29

split-complementary

#1F4C8D #8D291F #838D1F

monochromatic

#091629 #14315B #1F4C8D #2A67BF #4E87D8

Accessibility & contrast

On white

8.48

#1F4C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1F4C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4C8D

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4C8D	#FFFFFF	#000000	##FFFFFF
##1F4C8D	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A528F

Deuteranopia (green-blind)

#13488C

Tritanopia (blue-blind)

#005B65

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f4c8d;
/* rgb */ color: rgb(31, 76, 141);
/* oklch */ color: oklch(42.2% 0.119 258.0);

Tailwind

colors: {
  custom: {
    50: '#6c7daf',
    500: '#1f4c8d',
    950: '#000000',
  },
}

SCSS

$custom: #1f4c8d;
$custom-light: #6c7daf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4c8d",
  "rgb": {
    "r": 31,
    "g": 76,
    "b": 141
  },
  "hsl": {
    "h": 215.455,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.42214,
    "c": 0.11866,
    "h": 258
  },
  "luminance": 0.07383
}

Semantic roles & 50–950 ramp

primary

#1F4C8D

secondary

#BB8E4D

accent

#A341E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1F4C8D

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

Preview Lab → · Contrast checker → · Palette generator →