#1F2A7F#1F2A7F

#1F2A7F is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.7% C 0.142 H 270.7°. Best body text is #FFFFFF at 12.38:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A7F
RGB	rgb(31, 42, 127)
HSL	hsl(233, 61%, 31%)
HSV	hsv(233, 76%, 50%)
CMYK	cmyk(75.6%, 66.9%, 0%, 50.2%)
CIE-LAB	lab(21.87, 26.86, -49.28)
CIE-LCH	lch(21.87, 56.13, 298.59°)
OKLab	oklab(33.72% 0.0018 -0.1425)
OKLCH	oklch(33.72% 0.142 270.7)
XYZ	xyz(5.2225, 3.4790, 20.4708)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A7F #7F741F

analogous

#1F5A7F #1F2A7F #441F7F

triadic

#1F2A7F #7F1F2A #2A7F1F

tetradic

#1F2A7F #7F1F5A #7F741F #1F7F44

square

#1F2A7F #7F1F5A #7F741F #1F7F44

split-complementary

#1F2A7F #7F441F #5A7F1F

monochromatic

#07091D #131A4E #1F2A7F #2B3AB0 #4656D2

Accessibility & contrast

On white

12.38

#1F2A7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F2A7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A7F

12.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A7F	#FFFFFF	#000000	##FFFFFF
##1F2A7F	1.00	12.38	1.70	12.38
#FFFFFF	12.38	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003982

Deuteranopia (green-blind)

#00307D

Tritanopia (blue-blind)

#004050

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2a7f;
/* rgb */ color: rgb(31, 42, 127);
/* oklch */ color: oklch(33.7% 0.142 270.7);

Tailwind

colors: {
  custom: {
    50: '#6a63a5',
    500: '#1f2a7f',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a7f;
$custom-light: #6a63a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a7f",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 127
  },
  "hsl": {
    "h": 233.125,
    "s": 60.759,
    "l": 30.98
  },
  "oklch": {
    "l": 0.33719,
    "c": 0.14247,
    "h": 270.7
  },
  "luminance": 0.0348
}

Semantic roles & 50–950 ramp

primary

#1F2A7F

secondary

#B2A648

accent

#D244E4

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F2A7F

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

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