#1F2D8B#1F2D8B

#1F2D8B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.5% C 0.155 H 269.7°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#1F2D8B
RGB	rgb(31, 45, 139)
HSL	hsl(232, 64%, 33%)
HSV	hsv(232, 78%, 55%)
CMYK	cmyk(77.7%, 67.6%, 0%, 45.5%)
CIE-LAB	lab(23.78, 29.42, -53.68)
CIE-LCH	lch(23.78, 61.22, 298.72°)
OKLab	oklab(35.47% -0.0009 -0.1553)
OKLCH	oklch(35.47% 0.155 269.7)
XYZ	xyz(6.1621, 4.0315, 24.8745)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2D8B #8B7D1F

analogous

#1F638B #1F2D8B #471F8B

triadic

#1F2D8B #8B1F2D #2D8B1F

tetradic

#1F2D8B #8B1F63 #8B7D1F #1F8B47

square

#1F2D8B #8B1F63 #8B7D1F #1F8B47

split-complementary

#1F2D8B #8B471F #638B1F

monochromatic

#090D27 #141D59 #1F2D8B #2A3DBD #4D5FD7

Accessibility & contrast

On white

11.63

#1F2D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F2D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2D8B

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2D8B	#FFFFFF	#000000	##FFFFFF
##1F2D8B	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003489

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f2d8b;
/* rgb */ color: rgb(31, 45, 139);
/* oklch */ color: oklch(35.5% 0.155 269.7);

Tailwind

colors: {
  custom: {
    50: '#6d66ae',
    500: '#1f2d8b',
    950: '#000000',
  },
}

SCSS

$custom: #1f2d8b;
$custom-light: #6d66ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2d8b",
  "rgb": {
    "r": 31,
    "g": 45,
    "b": 139
  },
  "hsl": {
    "h": 232.222,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.35465,
    "c": 0.15532,
    "h": 269.7
  },
  "luminance": 0.04032
}

Semantic roles & 50–950 ramp

primary

#1F2D8B

secondary

#BAAC4C

accent

#D141E7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1F2D8B

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

Preview Lab → · Contrast checker → · Palette generator →