#1F488F#1F488F

#1F488F is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.4% C 0.127 H 260.6°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F488F
RGB	rgb(31, 72, 143)
HSL	hsl(218, 64%, 34%)
HSV	hsv(218, 78%, 56%)
CMYK	cmyk(78.3%, 49.7%, 0%, 43.9%)
CIE-LAB	lab(31.60, 12.48, -43.43)
CIE-LCH	lch(31.60, 45.19, 286.03°)
OKLab	oklab(41.44% -0.0207 -0.1248)
OKLCH	oklch(41.44% 0.127 260.6)
XYZ	xyz(7.8386, 6.9083, 26.9016)
Luminance	0.0691 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F488F #8F661F

analogous

#1F808F #1F488F #2E1F8F

triadic

#1F488F #8F1F48 #488F1F

tetradic

#1F488F #8F1F80 #8F661F #1F8F2E

square

#1F488F #8F1F80 #8F661F #1F8F2E

split-complementary

#1F488F #8F2E1F #808F1F

monochromatic

#09152A #142F5D #1F488F #2A61C1 #4F82D9

Accessibility & contrast

On white

8.82

#1F488F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1F488F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F488F

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F488F	#FFFFFF	#000000	##FFFFFF
##1F488F	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F5092

Deuteranopia (green-blind)

#00468E

Tritanopia (blue-blind)

#005964

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f488f;
/* rgb */ color: rgb(31, 72, 143);
/* oklch */ color: oklch(41.4% 0.127 260.6);

Tailwind

colors: {
  custom: {
    50: '#6c7ab0',
    500: '#1f488f',
    950: '#000000',
  },
}

SCSS

$custom: #1f488f;
$custom-light: #6c7ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f488f",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 143
  },
  "hsl": {
    "h": 218.036,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.41438,
    "c": 0.12651,
    "h": 260.6
  },
  "luminance": 0.06909
}

Semantic roles & 50–950 ramp

primary

#1F488F

secondary

#BC944E

accent

#AA40E7

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #1F488F

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

Preview Lab → · Contrast checker → · Palette generator →