#1F2F8C#1F2F8C

#1F2F8C is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.9% C 0.154 H 269.2°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F8C
RGB	rgb(31, 47, 140)
HSL	hsl(231, 64%, 34%)
HSV	hsv(231, 78%, 55%)
CMYK	cmyk(77.9%, 66.4%, 0%, 45.1%)
CIE-LAB	lab(24.38, 28.46, -53.32)
CIE-LCH	lch(24.38, 60.44, 298.09°)
OKLab	oklab(35.93% -0.0022 -0.1542)
OKLCH	oklch(35.93% 0.154 269.2)
XYZ	xyz(6.3136, 4.2171, 25.2871)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F8C #8C7C1F

analogous

#1F658C #1F2F8C #451F8C

triadic

#1F2F8C #8C1F2F #2F8C1F

tetradic

#1F2F8C #8C1F65 #8C7C1F #1F8C45

square

#1F2F8C #8C1F65 #8C7C1F #1F8C45

split-complementary

#1F2F8C #8C451F #658C1F

monochromatic

#090D28 #141E5A #1F2F8C #2A40BE #4E62D8

Accessibility & contrast

On white

11.39

#1F2F8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1F2F8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F8C

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F8C	#FFFFFF	#000000	##FFFFFF
##1F2F8C	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8F

Deuteranopia (green-blind)

#00358A

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f2f8c;
/* rgb */ color: rgb(31, 47, 140);
/* oklch */ color: oklch(35.9% 0.154 269.2);

Tailwind

colors: {
  custom: {
    50: '#6d67af',
    500: '#1f2f8c',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f8c;
$custom-light: #6d67af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f8c",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 140
  },
  "hsl": {
    "h": 231.193,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.35934,
    "c": 0.15426,
    "h": 269.2
  },
  "luminance": 0.04218
}

Semantic roles & 50–950 ramp

primary

#1F2F8C

secondary

#BBAA4C

accent

#CE41E7

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1F2F8C

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

Preview Lab → · Contrast checker → · Palette generator →