#1F2D71#1F2D71

#1F2D71 is a dark, moderate blue. Relative luminance 0.034; OKLCH L 33.0% C 0.118 H 269.9°. Best body text is #FFFFFF at 12.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F2D71
RGB	rgb(31, 45, 113)
HSL	hsl(230, 57%, 28%)
HSV	hsv(230, 73%, 44%)
CMYK	cmyk(72.6%, 60.2%, 0%, 55.7%)
CIE-LAB	lab(21.43, 19.31, -41.07)
CIE-LCH	lch(21.43, 45.39, 295.18°)
OKLab	oklab(33.01% -0.0003 -0.1183)
OKLCH	oklch(33.01% 0.118 269.9)
XYZ	xyz(4.4831, 3.3599, 16.0318)
Luminance	0.0336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2D71 #71631F

analogous

#1F5671 #1F2D71 #3A1F71

triadic

#1F2D71 #711F2D #2D711F

tetradic

#1F2D71 #711F56 #71631F #1F713A

square

#1F2D71 #711F56 #71631F #1F713A

split-complementary

#1F2D71 #713A1F #56711F

monochromatic

#070A18 #121A41 #1F2D71 #2C40A1 #4058CB

Accessibility & contrast

On white

12.56

#1F2D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F2D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2D71

12.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2D71	#FFFFFF	#000000	##FFFFFF
##1F2D71	1.00	12.56	1.67	12.56
#FFFFFF	12.56	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003773

Deuteranopia (green-blind)

#003070

Tritanopia (blue-blind)

#003E4A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2d71;
/* rgb */ color: rgb(31, 45, 113);
/* oklch */ color: oklch(33.0% 0.118 269.9);

Tailwind

colors: {
  custom: {
    50: '#66659a',
    500: '#1f2d71',
    950: '#000000',
  },
}

SCSS

$custom: #1f2d71;
$custom-light: #66659a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2d71",
  "rgb": {
    "r": 31,
    "g": 45,
    "b": 113
  },
  "hsl": {
    "h": 229.756,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.33008,
    "c": 0.11833,
    "h": 269.9
  },
  "luminance": 0.0336
}

Semantic roles & 50–950 ramp

primary

#1F2D71

secondary

#A59547

accent

#C648E0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050E

muted

#7A7A7E

Preview Lab

Preview with #1F2D71

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

Preview Lab → · Contrast checker → · Palette generator →