#1F2A7C#1F2A7C

#1F2A7C is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.4% C 0.138 H 270.8°. Best body text is #FFFFFF at 12.50:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A7C
RGB	rgb(31, 42, 124)
HSL	hsl(233, 60%, 30%)
HSV	hsv(233, 75%, 49%)
CMYK	cmyk(75%, 66.1%, 0%, 51.4%)
CIE-LAB	lab(21.59, 25.71, -47.84)
CIE-LCH	lch(21.59, 54.31, 298.25°)
OKLab	oklab(33.43% 0.002 -0.1382)
OKLCH	oklch(33.43% 0.138 270.8)
XYZ	xyz(5.0299, 3.4020, 19.4564)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A7C #7C711F

analogous

#1F587C #1F2A7C #421F7C

triadic

#1F2A7C #7C1F2A #2A7C1F

tetradic

#1F2A7C #7C1F58 #7C711F #1F7C42

square

#1F2A7C #7C1F58 #7C711F #1F7C42

split-complementary

#1F2A7C #7C421F #587C1F

monochromatic

#07091A #13194B #1F2A7C #2B3BAD #4555D0

Accessibility & contrast

On white

12.50

#1F2A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1F2A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A7C

12.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A7C	#FFFFFF	#000000	##FFFFFF
##1F2A7C	1.00	12.50	1.68	12.50
#FFFFFF	12.50	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00387F

Deuteranopia (green-blind)

#002F7A

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2a7c;
/* rgb */ color: rgb(31, 42, 124);
/* oklch */ color: oklch(33.4% 0.138 270.8);

Tailwind

colors: {
  custom: {
    50: '#6963a3',
    500: '#1f2a7c',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a7c;
$custom-light: #6963a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a7c",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 124
  },
  "hsl": {
    "h": 232.903,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.33426,
    "c": 0.13825,
    "h": 270.8
  },
  "luminance": 0.03402
}

Semantic roles & 50–950 ramp

primary

#1F2A7C

secondary

#AFA348

accent

#D045E3

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F2A7C

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

Preview Lab → · Contrast checker → · Palette generator →