#1F488A#1F488A

#1F488A is a dark, moderate blue. Relative luminance 0.068; OKLCH L 41.1% C 0.119 H 259.6°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#1F488A
RGB	rgb(31, 72, 138)
HSL	hsl(217, 63%, 33%)
HSV	hsv(217, 78%, 54%)
CMYK	cmyk(77.5%, 47.8%, 0%, 45.9%)
CIE-LAB	lab(31.25, 10.47, -40.91)
CIE-LCH	lch(31.25, 42.23, 284.36°)
OKLab	oklab(41.07% -0.0216 -0.1174)
OKLCH	oklch(41.07% 0.119 259.6)
XYZ	xyz(7.4682, 6.7602, 24.9511)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F488A #8A611F

analogous

#1F7D8A #1F488A #2B1F8A

triadic

#1F488A #8A1F48 #488A1F

tetradic

#1F488A #8A1F7D #8A611F #1F8A2B

square

#1F488A #8A1F7D #8A611F #1F8A2B

split-complementary

#1F488A #8A2B1F #7D8A1F

monochromatic

#091426 #142E58 #1F488A #2A62BC #4C82D7

Accessibility & contrast

On white

8.93

#1F488A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1F488A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F488A

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F488A	#FFFFFF	#000000	##FFFFFF
##1F488A	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254F8C

Deuteranopia (green-blind)

#094589

Tritanopia (blue-blind)

#005862

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f488a;
/* rgb */ color: rgb(31, 72, 138);
/* oklch */ color: oklch(41.1% 0.119 259.6);

Tailwind

colors: {
  custom: {
    50: '#6b7aad',
    500: '#1f488a',
    950: '#000000',
  },
}

SCSS

$custom: #1f488a;
$custom-light: #6b7aad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f488a",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 138
  },
  "hsl": {
    "h": 217.009,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.41065,
    "c": 0.11936,
    "h": 259.6
  },
  "luminance": 0.06761
}

Semantic roles & 50–950 ramp

primary

#1F488A

secondary

#BA8F4B

accent

#A741E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1F488A

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

Preview Lab → · Contrast checker → · Palette generator →