#1F2A7A#1F2A7A

#1F2A7A is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.2% C 0.135 H 270.9°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A7A
RGB	rgb(31, 42, 122)
HSL	hsl(233, 59%, 30%)
HSV	hsv(233, 75%, 48%)
CMYK	cmyk(74.6%, 65.6%, 0%, 52.2%)
CIE-LAB	lab(21.40, 24.94, -46.88)
CIE-LCH	lch(21.40, 53.10, 298.01°)
OKLab	oklab(33.23% 0.0021 -0.1354)
OKLCH	oklch(33.23% 0.135 270.9)
XYZ	xyz(4.9047, 3.3519, 18.7971)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A7A #7A6F1F

analogous

#1F587A #1F2A7A #411F7A

triadic

#1F2A7A #7A1F2A #2A7A1F

tetradic

#1F2A7A #7A1F58 #7A6F1F #1F7A41

square

#1F2A7A #7A1F58 #7A6F1F #1F7A41

split-complementary

#1F2A7A #7A411F #587A1F

monochromatic

#060818 #131949 #1F2A7A #2B3BAB #4455CF

Accessibility & contrast

On white

12.57

#1F2A7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F2A7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A7A

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A7A	#FFFFFF	#000000	##FFFFFF
##1F2A7A	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00387D

Deuteranopia (green-blind)

#002F78

Tritanopia (blue-blind)

#003F4E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2a7a;
/* rgb */ color: rgb(31, 42, 122);
/* oklch */ color: oklch(33.2% 0.135 270.9);

Tailwind

colors: {
  custom: {
    50: '#6963a1',
    500: '#1f2a7a',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a7a;
$custom-light: #6963a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a7a",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 122
  },
  "hsl": {
    "h": 232.747,
    "s": 59.477,
    "l": 30
  },
  "oklch": {
    "l": 0.33233,
    "c": 0.13543,
    "h": 270.9
  },
  "luminance": 0.03352
}

Semantic roles & 50–950 ramp

primary

#1F2A7A

secondary

#ADA147

accent

#D045E3

background

#F6F5FA

surface

#ECEAF3

border

#C7C6CD

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F2A7A

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

Preview Lab → · Contrast checker → · Palette generator →