#1F4D8F#1F4D8F

#1F4D8F is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.6% C 0.120 H 258.0°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F4D8F
RGB	rgb(31, 77, 143)
HSL	hsl(215, 64%, 34%)
HSV	hsv(215, 78%, 56%)
CMYK	cmyk(78.3%, 46.2%, 0%, 43.9%)
CIE-LAB	lab(33.10, 9.09, -41.03)
CIE-LCH	lch(33.10, 42.02, 282.50°)
OKLab	oklab(42.59% -0.0251 -0.1176)
OKLCH	oklch(42.59% 0.12 258)
XYZ	xyz(8.1751, 7.5813, 27.0138)
Luminance	0.0758 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4D8F #8F611F

analogous

#1F858F #1F4D8F #291F8F

triadic

#1F4D8F #8F1F4D #4D8F1F

tetradic

#1F4D8F #8F1F85 #8F611F #1F8F29

square

#1F4D8F #8F1F85 #8F611F #1F8F29

split-complementary

#1F4D8F #8F291F #858F1F

monochromatic

#09172A #14325D #1F4D8F #2A68C1 #4F88D9

Accessibility & contrast

On white

8.35

#1F4D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1F4D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4D8F

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4D8F	#FFFFFF	#000000	##FFFFFF
##1F4D8F	1.00	8.35	2.52	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B5392

Deuteranopia (green-blind)

#13498E

Tritanopia (blue-blind)

#005D67

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4d8f;
/* rgb */ color: rgb(31, 77, 143);
/* oklch */ color: oklch(42.6% 0.120 258.0);

Tailwind

colors: {
  custom: {
    50: '#6c7eb0',
    500: '#1f4d8f',
    950: '#000000',
  },
}

SCSS

$custom: #1f4d8f;
$custom-light: #6c7eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4d8f",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 143
  },
  "hsl": {
    "h": 215.357,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.42591,
    "c": 0.12026,
    "h": 258
  },
  "luminance": 0.07582
}

Semantic roles & 50–950 ramp

primary

#1F4D8F

secondary

#BC8F4E

accent

#A340E7

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #1F4D8F

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

Preview Lab → · Contrast checker → · Palette generator →