#1F3F7D#1F3F7D

#1F3F7D is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.112 H 262.0°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F3F7D
RGB	rgb(31, 63, 125)
HSL	hsl(220, 60%, 31%)
HSV	hsv(220, 75%, 49%)
CMYK	cmyk(75.2%, 49.6%, 0%, 51%)
CIE-LAB	lab(27.64, 11.44, -38.64)
CIE-LCH	lch(27.64, 40.30, 286.48°)
OKLab	oklab(38.01% -0.0156 -0.1109)
OKLCH	oklch(38.01% 0.112 262)
XYZ	xyz(6.0429, 5.3263, 20.1077)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3F7D #7D5D1F

analogous

#1F6E7D #1F3F7D #2E1F7D

triadic

#1F3F7D #7D1F3F #3F7D1F

tetradic

#1F3F7D #7D1F6E #7D5D1F #1F7D2E

square

#1F3F7D #7D1F6E #7D5D1F #1F7D2E

split-complementary

#1F3F7D #7D2E1F #6E7D1F

monochromatic

#070E1B #13264C #1F3F7D #2B58AE #4575D1

Accessibility & contrast

On white

10.17

#1F3F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1F3F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3F7D

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3F7D	#FFFFFF	#000000	##FFFFFF
##1F3F7D	1.00	10.17	2.07	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D467F

Deuteranopia (green-blind)

#033D7C

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f3f7d;
/* rgb */ color: rgb(31, 63, 125);
/* oklch */ color: oklch(38.0% 0.112 262.0);

Tailwind

colors: {
  custom: {
    50: '#6873a3',
    500: '#1f3f7d',
    950: '#000000',
  },
}

SCSS

$custom: #1f3f7d;
$custom-light: #6873a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3f7d",
  "rgb": {
    "r": 31,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 219.574,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.38005,
    "c": 0.11197,
    "h": 262
  },
  "luminance": 0.05327
}

Semantic roles & 50–950 ramp

primary

#1F3F7D

secondary

#B08D48

accent

#AD44E3

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F3F7D

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

Preview Lab → · Contrast checker → · Palette generator →