#1F458A#1F458A

#1F458A is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.4% C 0.123 H 261.2°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#1F458A
RGB	rgb(31, 69, 138)
HSL	hsl(219, 63%, 33%)
HSV	hsv(219, 78%, 54%)
CMYK	cmyk(77.5%, 50%, 0%, 45.9%)
CIE-LAB	lab(30.36, 12.52, -42.36)
CIE-LCH	lch(30.36, 44.17, 286.47°)
OKLab	oklab(40.37% -0.0189 -0.1217)
OKLCH	oklch(40.37% 0.123 261.2)
XYZ	xyz(7.2790, 6.3817, 24.8880)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F458A #8A641F

analogous

#1F7A8A #1F458A #2F1F8A

triadic

#1F458A #8A1F45 #458A1F

tetradic

#1F458A #8A1F7A #8A641F #1F8A2F

square

#1F458A #8A1F7A #8A641F #1F8A2F

split-complementary

#1F458A #8A2F1F #7A8A1F

monochromatic

#091326 #142C58 #1F458A #2A5EBC #4C7ED7

Accessibility & contrast

On white

9.22

#1F458A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1F458A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F458A

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F458A	#FFFFFF	#000000	##FFFFFF
##1F458A	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4D8D

Deuteranopia (green-blind)

#004389

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f458a;
/* rgb */ color: rgb(31, 69, 138);
/* oklch */ color: oklch(40.4% 0.123 261.2);

Tailwind

colors: {
  custom: {
    50: '#6b78ad',
    500: '#1f458a',
    950: '#000000',
  },
}

SCSS

$custom: #1f458a;
$custom-light: #6b78ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f458a",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 138
  },
  "hsl": {
    "h": 218.692,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.40374,
    "c": 0.12316,
    "h": 261.2
  },
  "luminance": 0.06383
}

Semantic roles & 50–950 ramp

primary

#1F458A

secondary

#BA924B

accent

#AC41E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1F458A

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

Preview Lab → · Contrast checker → · Palette generator →