#1F408F#1F408F

#1F408F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.7% C 0.137 H 264.0°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F408F
RGB	rgb(31, 64, 143)
HSL	hsl(222, 64%, 34%)
HSV	hsv(222, 78%, 56%)
CMYK	cmyk(78.3%, 55.2%, 0%, 43.9%)
CIE-LAB	lab(29.26, 17.97, -47.21)
CIE-LCH	lch(29.26, 50.51, 290.84°)
OKLab	oklab(39.66% -0.0142 -0.1361)
OKLCH	oklch(39.66% 0.137 264)
XYZ	xyz(7.3546, 5.9404, 26.7403)
Luminance	0.0594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F408F #8F6E1F

analogous

#1F788F #1F408F #361F8F

triadic

#1F408F #8F1F40 #408F1F

tetradic

#1F408F #8F1F78 #8F6E1F #1F8F36

square

#1F408F #8F1F78 #8F6E1F #1F8F36

split-complementary

#1F408F #8F361F #788F1F

monochromatic

#09132A #14295D #1F408F #2A57C1 #4F78D9

Accessibility & contrast

On white

9.60

#1F408F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1F408F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F408F

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F408F	#FFFFFF	#000000	##FFFFFF
##1F408F	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A92

Deuteranopia (green-blind)

#00408D

Tritanopia (blue-blind)

#005361

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f408f;
/* rgb */ color: rgb(31, 64, 143);
/* oklch */ color: oklch(39.7% 0.137 264.0);

Tailwind

colors: {
  custom: {
    50: '#6d74b0',
    500: '#1f408f',
    950: '#000000',
  },
}

SCSS

$custom: #1f408f;
$custom-light: #6d74b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f408f",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 143
  },
  "hsl": {
    "h": 222.321,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.39658,
    "c": 0.1368,
    "h": 264
  },
  "luminance": 0.05941
}

Semantic roles & 50–950 ramp

primary

#1F408F

secondary

#BC9B4E

accent

#B640E7

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F408F

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

Preview Lab → · Contrast checker → · Palette generator →