#1F2A77#1F2A77

#1F2A77 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.9% C 0.131 H 271.0°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A77
RGB	rgb(31, 42, 119)
HSL	hsl(233, 59%, 29%)
HSV	hsv(233, 74%, 47%)
CMYK	cmyk(73.9%, 64.7%, 0%, 53.3%)
CIE-LAB	lab(21.13, 23.77, -45.41)
CIE-LCH	lch(21.13, 51.26, 297.63°)
OKLab	oklab(32.95% 0.0022 -0.1311)
OKLCH	oklch(32.95% 0.131 271)
XYZ	xyz(4.7217, 3.2787, 17.8332)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A77 #776C1F

analogous

#1F5677 #1F2A77 #401F77

triadic

#1F2A77 #771F2A #2A771F

tetradic

#1F2A77 #771F56 #776C1F #1F7740

square

#1F2A77 #771F56 #776C1F #1F7740

split-complementary

#1F2A77 #77401F #56771F

monochromatic

#060918 #121946 #1F2A77 #2C3BA8 #4354CE

Accessibility & contrast

On white

12.68

#1F2A77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1F2A77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A77

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A77	#FFFFFF	#000000	##FFFFFF
##1F2A77	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)

#003779

Deuteranopia (green-blind)

#002F76

Tritanopia (blue-blind)

#003E4C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2a77;
/* rgb */ color: rgb(31, 42, 119);
/* oklch */ color: oklch(32.9% 0.131 271.0);

Tailwind

colors: {
  custom: {
    50: '#68639f',
    500: '#1f2a77',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a77;
$custom-light: #68639f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a77",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 119
  },
  "hsl": {
    "h": 232.5,
    "s": 58.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32946,
    "c": 0.13114,
    "h": 271
  },
  "luminance": 0.03279
}

Semantic roles & 50–950 ramp

primary

#1F2A77

secondary

#AB9E47

accent

#CE46E2

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #1F2A77

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

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