#1F438A#1F438A

#1F438A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.9% C 0.126 H 262.1°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F438A
RGB	rgb(31, 67, 138)
HSL	hsl(220, 63%, 33%)
HSV	hsv(220, 78%, 54%)
CMYK	cmyk(77.5%, 51.4%, 0%, 45.9%)
CIE-LAB	lab(29.76, 13.90, -43.32)
CIE-LCH	lch(29.76, 45.49, 287.79°)
OKLab	oklab(39.92% -0.0172 -0.1246)
OKLCH	oklch(39.92% 0.126 262.1)
XYZ	xyz(7.1580, 6.1398, 24.8477)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F438A #8A661F

analogous

#1F788A #1F438A #301F8A

triadic

#1F438A #8A1F43 #438A1F

tetradic

#1F438A #8A1F78 #8A661F #1F8A30

square

#1F438A #8A1F78 #8A661F #1F8A30

split-complementary

#1F438A #8A301F #788A1F

monochromatic

#091226 #142B58 #1F438A #2A5BBC #4C7BD7

Accessibility & contrast

On white

9.42

#1F438A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1F438A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F438A

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F438A	#FFFFFF	#000000	##FFFFFF
##1F438A	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184B8D

Deuteranopia (green-blind)

#004189

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f438a;
/* rgb */ color: rgb(31, 67, 138);
/* oklch */ color: oklch(39.9% 0.126 262.1);

Tailwind

colors: {
  custom: {
    50: '#6b76ad',
    500: '#1f438a',
    950: '#000000',
  },
}

SCSS

$custom: #1f438a;
$custom-light: #6b76ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f438a",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 138
  },
  "hsl": {
    "h": 219.813,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.3992,
    "c": 0.12574,
    "h": 262.1
  },
  "luminance": 0.06141
}

Semantic roles & 50–950 ramp

primary

#1F438A

secondary

#BA944B

accent

#AF41E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1F438A

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

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