#1F4C8E#1F4C8E

#1F4C8E is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.3% C 0.120 H 258.3°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#1F4C8E
RGB	rgb(31, 76, 142)
HSL	hsl(216, 64%, 34%)
HSV	hsv(216, 78%, 56%)
CMYK	cmyk(78.2%, 46.5%, 0%, 44.3%)
CIE-LAB	lab(32.73, 9.36, -41.00)
CIE-LCH	lch(32.73, 42.06, 282.87°)
OKLab	oklab(42.29% -0.0244 -0.1176)
OKLCH	oklch(42.29% 0.12 258.3)
XYZ	xyz(8.0302, 7.4123, 26.5934)
Luminance	0.0741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4C8E #8E611F

analogous

#1F848E #1F4C8E #2A1F8E

triadic

#1F4C8E #8E1F4C #4C8E1F

tetradic

#1F4C8E #8E1F84 #8E611F #1F8E2A

square

#1F4C8E #8E1F84 #8E611F #1F8E2A

split-complementary

#1F4C8E #8E2A1F #848E1F

monochromatic

#09162A #14315C #1F4C8E #2A67C0 #4F87D9

Accessibility & contrast

On white

8.46

#1F4C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1F4C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4C8E

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4C8E	#FFFFFF	#000000	##FFFFFF
##1F4C8E	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5291

Deuteranopia (green-blind)

#11488D

Tritanopia (blue-blind)

#005C66

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f4c8e;
/* rgb */ color: rgb(31, 76, 142);
/* oklch */ color: oklch(42.3% 0.120 258.3);

Tailwind

colors: {
  custom: {
    50: '#6c7daf',
    500: '#1f4c8e',
    950: '#000000',
  },
}

SCSS

$custom: #1f4c8e;
$custom-light: #6c7daf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4c8e",
  "rgb": {
    "r": 31,
    "g": 76,
    "b": 142
  },
  "hsl": {
    "h": 215.676,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.42286,
    "c": 0.12008,
    "h": 258.3
  },
  "luminance": 0.07413
}

Semantic roles & 50–950 ramp

primary

#1F4C8E

secondary

#BB8F4D

accent

#A441E7

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1F4C8E

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

Preview Lab → · Contrast checker → · Palette generator →