#1F44B2#1F44B2

#1F44B2 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.5% C 0.180 H 265.1°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#1F44B2
RGB	rgb(31, 68, 178)
HSL	hsl(225, 70%, 41%)
HSV	hsv(225, 83%, 70%)
CMYK	cmyk(82.6%, 61.8%, 0%, 30.2%)
CIE-LAB	lab(33.22, 29.02, -61.90)
CIE-LCH	lch(33.22, 68.36, 295.11°)
OKLab	oklab(43.52% -0.0152 -0.1791)
OKLCH	oklch(43.52% 0.18 265.1)
XYZ	xyz(10.6652, 7.6386, 43.0231)
Luminance	0.0764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F44B2 #B28D1F

analogous

#1F8DB2 #1F44B2 #431FB2

triadic

#1F44B2 #B21F44 #44B21F

tetradic

#1F44B2 #B21F8D #B28D1F #1FB243

square

#1F44B2 #B21F8D #B28D1F #1FB243

split-complementary

#1F44B2 #B2431F #8DB21F

monochromatic

#0D1C4A #16307E #1F44B2 #335DDB #6787E5

Accessibility & contrast

On white

8.31

#1F44B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1F44B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F44B2

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F44B2	#FFFFFF	#000000	##FFFFFF
##1F44B2	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B6

Deuteranopia (green-blind)

#0047B0

Tritanopia (blue-blind)

#006174

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f44b2;
/* rgb */ color: rgb(31, 68, 178);
/* oklch */ color: oklch(43.5% 0.180 265.1);

Tailwind

colors: {
  custom: {
    50: '#7577ca',
    500: '#1f44b2',
    950: '#000000',
  },
}

SCSS

$custom: #1f44b2;
$custom-light: #7577ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f44b2",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 178
  },
  "hsl": {
    "h": 224.898,
    "s": 70.335,
    "l": 40.98
  },
  "oklch": {
    "l": 0.4352,
    "c": 0.17977,
    "h": 265.1
  },
  "luminance": 0.0764
}

Semantic roles & 50–950 ramp

primary

#1F44B2

secondary

#CAB063

accent

#C03BED

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1F44B2

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

Preview Lab → · Contrast checker → · Palette generator →