#1F4CAE#1F4CAE

#1F4CAE is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.8% C 0.165 H 262.9°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#1F4CAE
RGB	rgb(31, 76, 174)
HSL	hsl(221, 70%, 40%)
HSV	hsv(221, 82%, 68%)
CMYK	cmyk(82.2%, 56.3%, 0%, 31.8%)
CIE-LAB	lab(35.03, 22.11, -56.57)
CIE-LCH	lch(35.03, 60.73, 291.35°)
OKLab	oklab(44.78% -0.0202 -0.1633)
OKLCH	oklch(44.78% 0.165 262.9)
XYZ	xyz(10.7868, 8.5149, 41.1112)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4CAE #AE811F

analogous

#1F93AE #1F4CAE #3A1FAE

triadic

#1F4CAE #AE1F4C #4CAE1F

tetradic

#1F4CAE #AE1F93 #AE811F #1FAE3A

square

#1F4CAE #AE1F93 #AE811F #1FAE3A

split-complementary

#1F4CAE #AE3A1F #93AE1F

monochromatic

#0C1F46 #16357A #1F4CAE #3066DA #648CE3

Accessibility & contrast

On white

7.77

#1F4CAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1F4CAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4CAE

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4CAE	#FFFFFF	#000000	##FFFFFF
##1F4CAE	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B1

Deuteranopia (green-blind)

#004CAC

Tritanopia (blue-blind)

#006475

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f4cae;
/* rgb */ color: rgb(31, 76, 174);
/* oklch */ color: oklch(44.8% 0.165 262.9);

Tailwind

colors: {
  custom: {
    50: '#747dc7',
    500: '#1f4cae',
    950: '#000000',
  },
}

SCSS

$custom: #1f4cae;
$custom-light: #747dc7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4cae",
  "rgb": {
    "r": 31,
    "g": 76,
    "b": 174
  },
  "hsl": {
    "h": 221.119,
    "s": 69.756,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44778,
    "c": 0.1646,
    "h": 262.9
  },
  "luminance": 0.08516
}

Semantic roles & 50–950 ramp

primary

#1F4CAE

secondary

#C8A860

accent

#B53BED

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1F4CAE

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

Preview Lab → · Contrast checker → · Palette generator →