#1F2A79#1F2A79

#1F2A79 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.1% C 0.134 H 270.9°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A79
RGB	rgb(31, 42, 121)
HSL	hsl(233, 59%, 30%)
HSV	hsv(233, 74%, 47%)
CMYK	cmyk(74.4%, 65.3%, 0%, 52.5%)
CIE-LAB	lab(21.31, 24.55, -46.39)
CIE-LCH	lch(21.31, 52.49, 297.89°)
OKLab	oklab(33.14% 0.0022 -0.134)
OKLCH	oklch(33.14% 0.134 270.9)
XYZ	xyz(4.8431, 3.3272, 18.4724)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A79 #796E1F

analogous

#1F5779 #1F2A79 #411F79

triadic

#1F2A79 #791F2A #2A791F

tetradic

#1F2A79 #791F57 #796E1F #1F7941

square

#1F2A79 #791F57 #796E1F #1F7941

split-complementary

#1F2A79 #79411F #57791F

monochromatic

#060818 #131948 #1F2A79 #2B3BAA #4354CF

Accessibility & contrast

On white

12.61

#1F2A79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F2A79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A79

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A79	#FFFFFF	#000000	##FFFFFF
##1F2A79	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377C

Deuteranopia (green-blind)

#002F77

Tritanopia (blue-blind)

#003E4D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2a79;
/* rgb */ color: rgb(31, 42, 121);
/* oklch */ color: oklch(33.1% 0.134 270.9);

Tailwind

colors: {
  custom: {
    50: '#6963a0',
    500: '#1f2a79',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a79;
$custom-light: #6963a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a79",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 121
  },
  "hsl": {
    "h": 232.667,
    "s": 59.211,
    "l": 29.804
  },
  "oklch": {
    "l": 0.33137,
    "c": 0.134,
    "h": 270.9
  },
  "luminance": 0.03328
}

Semantic roles & 50–950 ramp

primary

#1F2A79

secondary

#ACA047

accent

#CF45E2

background

#F6F5FA

surface

#ECEAF3

border

#C7C6CD

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F2A79

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

Preview Lab → · Contrast checker → · Palette generator →