#1F4582#1F4582

#1F4582 is a dark, moderate blue. Relative luminance 0.062; OKLCH L 39.8% C 0.112 H 259.5°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F4582
RGB	rgb(31, 69, 130)
HSL	hsl(217, 61%, 32%)
HSV	hsv(217, 76%, 51%)
CMYK	cmyk(76.2%, 46.9%, 0%, 49%)
CIE-LAB	lab(29.81, 9.31, -38.29)
CIE-LCH	lch(29.81, 39.40, 283.67°)
OKLab	oklab(39.78% -0.0203 -0.1097)
OKLCH	oklch(39.78% 0.112 259.5)
XYZ	xyz(6.7210, 6.1585, 21.9493)
Luminance	0.0616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4582 #825C1F

analogous

#1F7782 #1F4582 #2B1F82

triadic

#1F4582 #821F45 #45821F

tetradic

#1F4582 #821F77 #825C1F #1F822B

square

#1F4582 #821F77 #825C1F #1F822B

split-complementary

#1F4582 #822B1F #77821F

monochromatic

#07111F #132B51 #1F4582 #2B5FB3 #487ED3

Accessibility & contrast

On white

9.41

#1F4582 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1F4582 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4582

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4582	#FFFFFF	#000000	##FFFFFF
##1F4582	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264B84

Deuteranopia (green-blind)

#104281

Tritanopia (blue-blind)

#00535D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f4582;
/* rgb */ color: rgb(31, 69, 130);
/* oklch */ color: oklch(39.8% 0.112 259.5);

Tailwind

colors: {
  custom: {
    50: '#6978a7',
    500: '#1f4582',
    950: '#000000',
  },
}

SCSS

$custom: #1f4582;
$custom-light: #6978a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4582",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 130
  },
  "hsl": {
    "h": 216.97,
    "s": 61.491,
    "l": 31.569
  },
  "oklch": {
    "l": 0.39778,
    "c": 0.11158,
    "h": 259.5
  },
  "luminance": 0.06159
}

Semantic roles & 50–950 ramp

primary

#1F4582

secondary

#B58B48

accent

#A743E5

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F4582

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

Preview Lab → · Contrast checker → · Palette generator →