#1F2F8E#1F2F8E

#1F2F8E is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.157 H 269.1°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F8E
RGB	rgb(31, 47, 142)
HSL	hsl(231, 64%, 34%)
HSV	hsv(231, 78%, 56%)
CMYK	cmyk(78.2%, 66.9%, 0%, 44.3%)
CIE-LAB	lab(24.57, 29.22, -54.25)
CIE-LCH	lch(24.57, 61.62, 298.31°)
OKLab	oklab(36.13% -0.0023 -0.157)
OKLCH	oklch(36.13% 0.157 269.1)
XYZ	xyz(6.4624, 4.2766, 26.0708)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F8E #8E7E1F

analogous

#1F678E #1F2F8E #471F8E

triadic

#1F2F8E #8E1F2F #2F8E1F

tetradic

#1F2F8E #8E1F67 #8E7E1F #1F8E47

square

#1F2F8E #8E1F67 #8E7E1F #1F8E47

split-complementary

#1F2F8E #8E471F #678E1F

monochromatic

#090E2A #141E5C #1F2F8E #2A40C0 #4F63D9

Accessibility & contrast

On white

11.32

#1F2F8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1F2F8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F8E

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F8E	#FFFFFF	#000000	##FFFFFF
##1F2F8E	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00358C

Tritanopia (blue-blind)

#00485A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f2f8e;
/* rgb */ color: rgb(31, 47, 142);
/* oklch */ color: oklch(36.1% 0.157 269.1);

Tailwind

colors: {
  custom: {
    50: '#6e67b0',
    500: '#1f2f8e',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f8e;
$custom-light: #6e67b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f8e",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 142
  },
  "hsl": {
    "h": 231.351,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.36131,
    "c": 0.15698,
    "h": 269.1
  },
  "luminance": 0.04277
}

Semantic roles & 50–950 ramp

primary

#1F2F8E

secondary

#BBAC4D

accent

#CF41E7

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1F2F8E

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

Preview Lab → · Contrast checker → · Palette generator →