#1F2F70#1F2F70

#1F2F70 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.4% C 0.114 H 268.9°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F70
RGB	rgb(31, 47, 112)
HSL	hsl(228, 57%, 28%)
HSV	hsv(228, 72%, 44%)
CMYK	cmyk(72.3%, 58%, 0%, 56.1%)
CIE-LAB	lab(21.92, 17.50, -39.63)
CIE-LCH	lch(21.92, 43.32, 293.82°)
OKLab	oklab(33.35% -0.0021 -0.1141)
OKLCH	oklch(33.35% 0.114 268.9)
XYZ	xyz(4.5052, 3.4937, 15.7630)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F70 #70601F

analogous

#1F5770 #1F2F70 #371F70

triadic

#1F2F70 #701F2F #2F701F

tetradic

#1F2F70 #701F57 #70601F #1F7037

square

#1F2F70 #701F57 #70601F #1F7037

split-complementary

#1F2F70 #70371F #57701F

monochromatic

#070A18 #121B40 #1F2F70 #2C43A0 #3F5BCA

Accessibility & contrast

On white

12.36

#1F2F70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F2F70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F70

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F70	#FFFFFF	#000000	##FFFFFF
##1F2F70	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003872

Deuteranopia (green-blind)

#00316F

Tritanopia (blue-blind)

#003F4A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2f70;
/* rgb */ color: rgb(31, 47, 112);
/* oklch */ color: oklch(33.4% 0.114 268.9);

Tailwind

colors: {
  custom: {
    50: '#66679a',
    500: '#1f2f70',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f70;
$custom-light: #66679a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f70",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 112
  },
  "hsl": {
    "h": 228.148,
    "s": 56.643,
    "l": 28.039
  },
  "oklch": {
    "l": 0.3335,
    "c": 0.11409,
    "h": 268.9
  },
  "luminance": 0.03494
}

Semantic roles & 50–950 ramp

primary

#1F2F70

secondary

#A49247

accent

#C248E0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1F2F70

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

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