#1F4AA8#1F4AA8

#1F4AA8 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.9% C 0.159 H 263.0°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F4AA8
RGB	rgb(31, 74, 168)
HSL	hsl(221, 69%, 39%)
HSV	hsv(221, 82%, 66%)
CMYK	cmyk(81.5%, 56%, 0%, 34.1%)
CIE-LAB	lab(34.01, 21.09, -54.65)
CIE-LCH	lch(34.01, 58.58, 291.10°)
OKLab	oklab(43.86% -0.0194 -0.1577)
OKLCH	oklch(43.86% 0.159 263)
XYZ	xyz(10.0792, 8.0148, 38.0540)
Luminance	0.0802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4AA8 #A87D1F

analogous

#1F8FA8 #1F4AA8 #391FA8

triadic

#1F4AA8 #A81F4A #4AA81F

tetradic

#1F4AA8 #A81F8F #A87D1F #1FA839

square

#1F4AA8 #A81F8F #A87D1F #1FA839

split-complementary

#1F4AA8 #A8391F #8FA81F

monochromatic

#0C1C41 #153374 #1F4AA8 #2C62D8 #6089E2

Accessibility & contrast

On white

8.07

#1F4AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#1F4AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4AA8

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4AA8	#FFFFFF	#000000	##FFFFFF
##1F4AA8	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AB

Deuteranopia (green-blind)

#004AA6

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f4aa8;
/* rgb */ color: rgb(31, 74, 168);
/* oklch */ color: oklch(43.9% 0.159 263.0);

Tailwind

colors: {
  custom: {
    50: '#727bc3',
    500: '#1f4aa8',
    950: '#000000',
  },
}

SCSS

$custom: #1f4aa8;
$custom-light: #727bc3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4aa8",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 168
  },
  "hsl": {
    "h": 221.168,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.43861,
    "c": 0.15893,
    "h": 263
  },
  "luminance": 0.08016
}

Semantic roles & 50–950 ramp

primary

#1F4AA8

secondary

#C6A55D

accent

#B53CEC

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4AA8

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

Preview Lab → · Contrast checker → · Palette generator →