#1F49A4#1F49A4

#1F49A4 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.3% C 0.155 H 262.9°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#1F49A4
RGB	rgb(31, 73, 164)
HSL	hsl(221, 68%, 38%)
HSV	hsv(221, 81%, 64%)
CMYK	cmyk(81.1%, 55.5%, 0%, 35.7%)
CIE-LAB	lab(33.43, 20.18, -53.21)
CIE-LCH	lch(33.43, 56.91, 290.77°)
OKLab	oklab(43.32% -0.019 -0.1535)
OKLCH	oklch(43.32% 0.155 262.9)
XYZ	xyz(9.6461, 7.7356, 36.0995)
Luminance	0.0774 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F49A4 #A47A1F

analogous

#1F8BA4 #1F49A4 #381FA4

triadic

#1F49A4 #A41F49 #49A41F

tetradic

#1F49A4 #A41F8B #A47A1F #1FA438

square

#1F49A4 #A41F8B #A47A1F #1FA438

split-complementary

#1F49A4 #A4381F #8BA41F

monochromatic

#0C1B3D #153271 #1F49A4 #2A60D7 #5D86E0

Accessibility & contrast

On white

8.24

#1F49A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1F49A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F49A4

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F49A4	#FFFFFF	#000000	##FFFFFF
##1F49A4	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A7

Deuteranopia (green-blind)

#0049A2

Tritanopia (blue-blind)

#00606F

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f49a4;
/* rgb */ color: rgb(31, 73, 164);
/* oklch */ color: oklch(43.3% 0.155 262.9);

Tailwind

colors: {
  custom: {
    50: '#717bc0',
    500: '#1f49a4',
    950: '#000000',
  },
}

SCSS

$custom: #1f49a4;
$custom-light: #717bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f49a4",
  "rgb": {
    "r": 31,
    "g": 73,
    "b": 164
  },
  "hsl": {
    "h": 221.053,
    "s": 68.205,
    "l": 38.235
  },
  "oklch": {
    "l": 0.4332,
    "c": 0.1547,
    "h": 262.9
  },
  "luminance": 0.07737
}

Semantic roles & 50–950 ramp

primary

#1F49A4

secondary

#C5A35A

accent

#B43DEB

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F49A4

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

Preview Lab → · Contrast checker → · Palette generator →