#1F44A1#1F44A1

#1F44A1 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.0% C 0.157 H 264.2°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#1F44A1
RGB	rgb(31, 68, 161)
HSL	hsl(223, 68%, 38%)
HSV	hsv(223, 81%, 63%)
CMYK	cmyk(80.7%, 57.8%, 0%, 36.9%)
CIE-LAB	lab(31.80, 22.38, -54.04)
CIE-LCH	lch(31.80, 58.50, 292.50°)
OKLab	oklab(42.02% -0.0158 -0.1561)
OKLCH	oklch(42.02% 0.157 264.2)
XYZ	xyz(9.0629, 6.9977, 34.5843)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F44A1 #A17C1F

analogous

#1F85A1 #1F44A1 #3B1FA1

triadic

#1F44A1 #A11F44 #44A11F

tetradic

#1F44A1 #A11F85 #A17C1F #1FA13B

square

#1F44A1 #A11F85 #A17C1F #1FA13B

split-complementary

#1F44A1 #A13B1F #85A11F

monochromatic

#0B193A #152E6E #1F44A1 #295AD4 #5B81DF

Accessibility & contrast

On white

8.75

#1F44A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1F44A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F44A1

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F44A1	#FFFFFF	#000000	##FFFFFF
##1F44A1	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A4

Deuteranopia (green-blind)

#00459F

Tritanopia (blue-blind)

#005B6B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f44a1;
/* rgb */ color: rgb(31, 68, 161);
/* oklch */ color: oklch(42.0% 0.157 264.2);

Tailwind

colors: {
  custom: {
    50: '#7177be',
    500: '#1f44a1',
    950: '#000000',
  },
}

SCSS

$custom: #1f44a1;
$custom-light: #7177be;
$custom-dark: #000000;

JSON

{
  "hex": "#1f44a1",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 161
  },
  "hsl": {
    "h": 222.923,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.4202,
    "c": 0.15688,
    "h": 264.2
  },
  "luminance": 0.06999
}

Semantic roles & 50–950 ramp

primary

#1F44A1

secondary

#C4A558

accent

#B93DEB

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F44A1

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

Preview Lab → · Contrast checker → · Palette generator →