#1F418B#1F418B

#1F418B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.6% C 0.130 H 263.2°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F418B
RGB	rgb(31, 65, 139)
HSL	hsl(221, 64%, 33%)
HSV	hsv(221, 78%, 55%)
CMYK	cmyk(77.7%, 53.2%, 0%, 45.5%)
CIE-LAB	lab(29.25, 15.68, -44.77)
CIE-LCH	lch(29.25, 47.43, 289.30°)
OKLab	oklab(39.55% -0.0154 -0.1289)
OKLCH	oklch(39.55% 0.13 263.2)
XYZ	xyz(7.1139, 5.9352, 25.1918)
Luminance	0.0594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F418B #8B691F

analogous

#1F778B #1F418B #331F8B

triadic

#1F418B #8B1F41 #418B1F

tetradic

#1F418B #8B1F77 #8B691F #1F8B33

square

#1F418B #8B1F77 #8B691F #1F8B33

split-complementary

#1F418B #8B331F #778B1F

monochromatic

#091227 #142A59 #1F418B #2A58BD #4D79D7

Accessibility & contrast

On white

9.60

#1F418B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1F418B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F418B

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F418B	#FFFFFF	#000000	##FFFFFF
##1F418B	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4A8E

Deuteranopia (green-blind)

#00408A

Tritanopia (blue-blind)

#00535F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f418b;
/* rgb */ color: rgb(31, 65, 139);
/* oklch */ color: oklch(39.6% 0.130 263.2);

Tailwind

colors: {
  custom: {
    50: '#6c75ad',
    500: '#1f418b',
    950: '#000000',
  },
}

SCSS

$custom: #1f418b;
$custom-light: #6c75ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f418b",
  "rgb": {
    "r": 31,
    "g": 65,
    "b": 139
  },
  "hsl": {
    "h": 221.111,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.39552,
    "c": 0.12978,
    "h": 263.2
  },
  "luminance": 0.05936
}

Semantic roles & 50–950 ramp

primary

#1F418B

secondary

#BA974C

accent

#B341E7

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1F418B

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

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