#1F4EA8#1F4EA8

#1F4EA8 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.7% C 0.154 H 261.7°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F4EA8
RGB	rgb(31, 78, 168)
HSL	hsl(219, 69%, 39%)
HSV	hsv(219, 82%, 66%)
CMYK	cmyk(81.5%, 53.6%, 0%, 34.1%)
CIE-LAB	lab(35.13, 18.39, -52.83)
CIE-LCH	lch(35.13, 55.94, 289.20°)
OKLab	oklab(44.71% -0.0222 -0.1523)
OKLCH	oklch(44.71% 0.154 261.7)
XYZ	xyz(10.3548, 8.5660, 38.1459)
Luminance	0.0857 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4EA8 #A8791F

analogous

#1F93A8 #1F4EA8 #351FA8

triadic

#1F4EA8 #A81F4E #4EA81F

tetradic

#1F4EA8 #A81F93 #A8791F #1FA835

square

#1F4EA8 #A81F93 #A8791F #1FA835

split-complementary

#1F4EA8 #A8351F #93A81F

monochromatic

#0C1E41 #153674 #1F4EA8 #2C67D8 #608CE2

Accessibility & contrast

On white

7.74

#1F4EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1F4EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4EA8

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4EA8	#FFFFFF	#000000	##FFFFFF
##1F4EA8	1.00	7.74	2.71	7.74
#FFFFFF	7.74	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0759AB

Deuteranopia (green-blind)

#004DA6

Tritanopia (blue-blind)

#006473

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f4ea8;
/* rgb */ color: rgb(31, 78, 168);
/* oklch */ color: oklch(44.7% 0.154 261.7);

Tailwind

colors: {
  custom: {
    50: '#727ec2',
    500: '#1f4ea8',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ea8;
$custom-light: #727ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ea8",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 168
  },
  "hsl": {
    "h": 219.416,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.44711,
    "c": 0.15392,
    "h": 261.7
  },
  "luminance": 0.08567
}

Semantic roles & 50–950 ramp

primary

#1F4EA8

secondary

#C6A25D

accent

#AF3CEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F4EA8

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

Preview Lab → · Contrast checker → · Palette generator →