#1F45AE#1F45AE

#1F45AE is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.4% C 0.173 H 264.7°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F45AE
RGB	rgb(31, 69, 174)
HSL	hsl(224, 70%, 40%)
HSV	hsv(224, 82%, 68%)
CMYK	cmyk(82.2%, 60.3%, 0%, 31.8%)
CIE-LAB	lab(33.14, 26.80, -59.65)
CIE-LCH	lch(33.14, 65.40, 294.20°)
OKLab	oklab(43.36% -0.0159 -0.1725)
OKLCH	oklch(43.36% 0.173 264.7)
XYZ	xyz(10.3305, 7.6023, 40.9591)
Luminance	0.0760 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F45AE #AE881F

analogous

#1F8CAE #1F45AE #411FAE

triadic

#1F45AE #AE1F45 #45AE1F

tetradic

#1F45AE #AE1F8C #AE881F #1FAE41

square

#1F45AE #AE1F8C #AE881F #1FAE41

split-complementary

#1F45AE #AE411F #8CAE1F

monochromatic

#0C1C46 #16307A #1F45AE #305DDA #6486E3

Accessibility & contrast

On white

8.33

#1F45AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1F45AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F45AE

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F45AE	#FFFFFF	#000000	##FFFFFF
##1F45AE	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B1

Deuteranopia (green-blind)

#0048AC

Tritanopia (blue-blind)

#006072

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f45ae;
/* rgb */ color: rgb(31, 69, 174);
/* oklch */ color: oklch(43.4% 0.173 264.7);

Tailwind

colors: {
  custom: {
    50: '#7478c7',
    500: '#1f45ae',
    950: '#000000',
  },
}

SCSS

$custom: #1f45ae;
$custom-light: #7478c7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f45ae",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 174
  },
  "hsl": {
    "h": 224.056,
    "s": 69.756,
    "l": 40.196
  },
  "oklch": {
    "l": 0.43357,
    "c": 0.17325,
    "h": 264.7
  },
  "luminance": 0.07604
}

Semantic roles & 50–950 ramp

primary

#1F45AE

secondary

#C8AD60

accent

#BD3BED

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1F45AE

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

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