#1F4EAD#1F4EAD

#1F4EAD is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.1% C 0.161 H 262.2°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#1F4EAD
RGB	rgb(31, 78, 173)
HSL	hsl(220, 70%, 40%)
HSV	hsv(220, 82%, 68%)
CMYK	cmyk(82.1%, 54.9%, 0%, 32.2%)
CIE-LAB	lab(35.51, 20.37, -55.20)
CIE-LCH	lch(35.51, 58.84, 290.26°)
OKLab	oklab(45.12% -0.0217 -0.1593)
OKLCH	oklch(45.12% 0.161 262.2)
XYZ	xyz(10.8296, 8.7559, 40.6463)
Luminance	0.0876 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4EAD #AD7E1F

analogous

#1F95AD #1F4EAD #371FAD

triadic

#1F4EAD #AD1F4E #4EAD1F

tetradic

#1F4EAD #AD1F95 #AD7E1F #1FAD37

square

#1F4EAD #AD1F95 #AD7E1F #1FAD37

split-complementary

#1F4EAD #AD371F #95AD1F

monochromatic

#0C1F45 #163779 #1F4EAD #2F68DA #638EE3

Accessibility & contrast

On white

7.63

#1F4EAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1F4EAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4EAD

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4EAD	#FFFFFF	#000000	##FFFFFF
##1F4EAD	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB0

Deuteranopia (green-blind)

#004DAB

Tritanopia (blue-blind)

#006676

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f4ead;
/* rgb */ color: rgb(31, 78, 173);
/* oklch */ color: oklch(45.1% 0.161 262.2);

Tailwind

colors: {
  custom: {
    50: '#737ec6',
    500: '#1f4ead',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ead;
$custom-light: #737ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ead",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 173
  },
  "hsl": {
    "h": 220.141,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.45115,
    "c": 0.16076,
    "h": 262.2
  },
  "luminance": 0.08757
}

Semantic roles & 50–950 ramp

primary

#1F4EAD

secondary

#C8A660

accent

#B23BEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1F4EAD

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

Preview Lab → · Contrast checker → · Palette generator →