#1F2F6F#1F2F6F

#1F2F6F is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.3% C 0.113 H 268.9°. Best body text is #FFFFFF at 12.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F6F
RGB	rgb(31, 47, 111)
HSL	hsl(228, 56%, 28%)
HSV	hsv(228, 72%, 44%)
CMYK	cmyk(72.1%, 57.7%, 0%, 56.5%)
CIE-LAB	lab(21.84, 17.10, -39.12)
CIE-LCH	lch(21.84, 42.69, 293.61°)
OKLab	oklab(33.26% -0.0022 -0.1126)
OKLCH	oklch(33.26% 0.113 268.9)
XYZ	xyz(4.4498, 3.4716, 15.4714)
Luminance	0.0347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F6F #6F5F1F

analogous

#1F576F #1F2F6F #371F6F

triadic

#1F2F6F #6F1F2F #2F6F1F

tetradic

#1F2F6F #6F1F57 #6F5F1F #1F6F37

square

#1F2F6F #6F1F57 #6F5F1F #1F6F37

split-complementary

#1F2F6F #6F371F #576F1F

monochromatic

#070A18 #121B3F #1F2F6F #2C439F #3F5BC9

Accessibility & contrast

On white

12.39

#1F2F6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2F6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F6F

12.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F6F	#FFFFFF	#000000	##FFFFFF
##1F2F6F	1.00	12.39	1.69	12.39
#FFFFFF	12.39	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003871

Deuteranopia (green-blind)

#00316E

Tritanopia (blue-blind)

#003E4A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2f6f;
/* rgb */ color: rgb(31, 47, 111);
/* oklch */ color: oklch(33.3% 0.113 268.9);

Tailwind

colors: {
  custom: {
    50: '#666799',
    500: '#1f2f6f',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f6f;
$custom-light: #666799;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f6f",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 111
  },
  "hsl": {
    "h": 228,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.33264,
    "c": 0.11258,
    "h": 268.9
  },
  "luminance": 0.03472
}

Semantic roles & 50–950 ramp

primary

#1F2F6F

secondary

#A39147

accent

#C148E0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1F2F6F

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

Preview Lab → · Contrast checker → · Palette generator →