#1F327B#1F327B

#1F327B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.9% C 0.126 H 268.1°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F327B
RGB	rgb(31, 50, 123)
HSL	hsl(228, 60%, 30%)
HSV	hsv(228, 75%, 48%)
CMYK	cmyk(74.8%, 59.3%, 0%, 51.8%)
CIE-LAB	lab(23.68, 19.75, -43.80)
CIE-LCH	lch(23.68, 48.05, 294.27°)
OKLab	oklab(34.95% -0.0042 -0.1263)
OKLCH	oklch(34.95% 0.126 268.1)
XYZ	xyz(5.2796, 4.0020, 19.2293)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F327B #7B681F

analogous

#1F607B #1F327B #3A1F7B

triadic

#1F327B #7B1F32 #327B1F

tetradic

#1F327B #7B1F60 #7B681F #1F7B3A

square

#1F327B #7B1F60 #7B681F #1F7B3A

split-complementary

#1F327B #7B3A1F #607B1F

monochromatic

#060A19 #131E4A #1F327B #2B46AC #4461D0

Accessibility & contrast

On white

11.66

#1F327B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1F327B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F327B

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F327B	#FFFFFF	#000000	##FFFFFF
##1F327B	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7D

Deuteranopia (green-blind)

#00347A

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f327b;
/* rgb */ color: rgb(31, 50, 123);
/* oklch */ color: oklch(34.9% 0.126 268.1);

Tailwind

colors: {
  custom: {
    50: '#6969a2',
    500: '#1f327b',
    950: '#000000',
  },
}

SCSS

$custom: #1f327b;
$custom-light: #6969a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f327b",
  "rgb": {
    "r": 31,
    "g": 50,
    "b": 123
  },
  "hsl": {
    "h": 227.609,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.3495,
    "c": 0.12634,
    "h": 268.1
  },
  "luminance": 0.04003
}

Semantic roles & 50–950 ramp

primary

#1F327B

secondary

#AE9948

accent

#C245E3

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1F327B

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

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