#1F2B74#1F2B74

#1F2B74 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.9% C 0.125 H 270.7°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B74
RGB	rgb(31, 43, 116)
HSL	hsl(232, 58%, 29%)
HSV	hsv(232, 73%, 45%)
CMYK	cmyk(73.3%, 62.9%, 0%, 54.5%)
CIE-LAB	lab(21.13, 21.91, -43.49)
CIE-LCH	lch(21.13, 48.69, 296.74°)
OKLab	oklab(32.87% 0.0015 -0.1255)
OKLCH	oklch(32.87% 0.125 270.7)
XYZ	xyz(4.5803, 3.2796, 16.9112)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B74 #74681F

analogous

#1F5674 #1F2B74 #3E1F74

triadic

#1F2B74 #741F2B #2B741F

tetradic

#1F2B74 #741F56 #74681F #1F743E

square

#1F2B74 #741F56 #74681F #1F743E

split-complementary

#1F2B74 #743E1F #56741F

monochromatic

#060918 #121944 #1F2B74 #2C3DA4 #4155CC

Accessibility & contrast

On white

12.68

#1F2B74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1F2B74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B74

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B74	#FFFFFF	#000000	##FFFFFF
##1F2B74	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003776

Deuteranopia (green-blind)

#002F73

Tritanopia (blue-blind)

#003D4B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2b74;
/* rgb */ color: rgb(31, 43, 116);
/* oklch */ color: oklch(32.9% 0.125 270.7);

Tailwind

colors: {
  custom: {
    50: '#67649d',
    500: '#1f2b74',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b74;
$custom-light: #67649d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b74",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 116
  },
  "hsl": {
    "h": 231.529,
    "s": 57.823,
    "l": 28.824
  },
  "oklch": {
    "l": 0.32865,
    "c": 0.12547,
    "h": 270.7
  },
  "luminance": 0.0328
}

Semantic roles & 50–950 ramp

primary

#1F2B74

secondary

#A89A47

accent

#CB47E1

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2B74

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

Preview Lab → · Contrast checker → · Palette generator →