#1F2F7F#1F2F7F

#1F2F7F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.136 H 269.2°. Best body text is #FFFFFF at 11.86:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F7F
RGB	rgb(31, 47, 127)
HSL	hsl(230, 61%, 31%)
HSV	hsv(230, 76%, 50%)
CMYK	cmyk(75.6%, 63%, 0%, 50.2%)
CIE-LAB	lab(23.19, 23.42, -47.12)
CIE-LCH	lch(23.19, 52.62, 296.43°)
OKLab	oklab(34.69% -0.0018 -0.1361)
OKLCH	oklch(34.69% 0.136 269.2)
XYZ	xyz(5.4110, 3.8561, 20.5337)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F7F #7F6F1F

analogous

#1F5F7F #1F2F7F #3F1F7F

triadic

#1F2F7F #7F1F2F #2F7F1F

tetradic

#1F2F7F #7F1F5F #7F6F1F #1F7F3F

square

#1F2F7F #7F1F5F #7F6F1F #1F7F3F

split-complementary

#1F2F7F #7F3F1F #5F7F1F

monochromatic

#070B1D #131D4E #1F2F7F #2B41B0 #465ED2

Accessibility & contrast

On white

11.86

#1F2F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F2F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F7F

11.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F7F	#FFFFFF	#000000	##FFFFFF
##1F2F7F	1.00	11.86	1.77	11.86
#FFFFFF	11.86	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C82

Deuteranopia (green-blind)

#00337D

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f2f7f;
/* rgb */ color: rgb(31, 47, 127);
/* oklch */ color: oklch(34.7% 0.136 269.2);

Tailwind

colors: {
  custom: {
    50: '#6a67a5',
    500: '#1f2f7f',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f7f;
$custom-light: #6a67a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f7f",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 127
  },
  "hsl": {
    "h": 230,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.34693,
    "c": 0.13609,
    "h": 269.2
  },
  "luminance": 0.03857
}

Semantic roles & 50–950 ramp

primary

#1F2F7F

secondary

#B2A048

accent

#C944E4

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1F2F7F

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

Preview Lab → · Contrast checker → · Palette generator →