#1F2B7F#1F2B7F

#1F2B7F is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.9% C 0.141 H 270.5°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B7F
RGB	rgb(31, 43, 127)
HSL	hsl(233, 61%, 31%)
HSV	hsv(233, 76%, 50%)
CMYK	cmyk(75.6%, 66.1%, 0%, 50.2%)
CIE-LAB	lab(22.13, 26.18, -48.86)
CIE-LCH	lch(22.13, 55.43, 298.18°)
OKLab	oklab(33.91% 0.0011 -0.1412)
OKLCH	oklch(33.91% 0.141 270.5)
XYZ	xyz(5.2584, 3.5508, 20.4828)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B7F #7F731F

analogous

#1F5B7F #1F2B7F #431F7F

triadic

#1F2B7F #7F1F2B #2B7F1F

tetradic

#1F2B7F #7F1F5B #7F731F #1F7F43

square

#1F2B7F #7F1F5B #7F731F #1F7F43

split-complementary

#1F2B7F #7F431F #5B7F1F

monochromatic

#070A1D #131A4E #1F2B7F #2B3CB0 #4658D2

Accessibility & contrast

On white

12.28

#1F2B7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1F2B7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B7F

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B7F	#FFFFFF	#000000	##FFFFFF
##1F2B7F	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A82

Deuteranopia (green-blind)

#00317D

Tritanopia (blue-blind)

#004151

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2b7f;
/* rgb */ color: rgb(31, 43, 127);
/* oklch */ color: oklch(33.9% 0.141 270.5);

Tailwind

colors: {
  custom: {
    50: '#6a64a5',
    500: '#1f2b7f',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b7f;
$custom-light: #6a64a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b7f",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 127
  },
  "hsl": {
    "h": 232.5,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.33909,
    "c": 0.14121,
    "h": 270.5
  },
  "luminance": 0.03551
}

Semantic roles & 50–950 ramp

primary

#1F2B7F

secondary

#B2A548

accent

#D044E4

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1F2B7F

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

Preview Lab → · Contrast checker → · Palette generator →