#1F2F9E#1F2F9E

#1F2F9E is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.7% C 0.178 H 268.8°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F9E
RGB	rgb(31, 47, 158)
HSL	hsl(232, 67%, 37%)
HSV	hsv(232, 80%, 62%)
CMYK	cmyk(80.4%, 70.3%, 0%, 38%)
CIE-LAB	lab(26.13, 35.21, -61.50)
CIE-LCH	lch(26.13, 70.87, 299.79°)
OKLab	oklab(37.75% -0.0036 -0.1781)
OKLCH	oklch(37.75% 0.178 268.8)
XYZ	xyz(7.7510, 4.7921, 32.8576)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F9E #9E8E1F

analogous

#1F6F9E #1F2F9E #4F1F9E

triadic

#1F2F9E #9E1F2F #2F9E1F

tetradic

#1F2F9E #9E1F6F #9E8E1F #1F9E4F

square

#1F2F9E #9E1F6F #9E8E1F #1F9E4F

split-complementary

#1F2F9E #9E4F1F #6F9E1F

monochromatic

#0B1138 #15206B #1F2F9E #293ED1 #596ADE

Accessibility & contrast

On white

10.72

#1F2F9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1F2F9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F9E

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F9E	#FFFFFF	#000000	##FFFFFF
##1F2F9E	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A1

Deuteranopia (green-blind)

#00389C

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1f2f9e;
/* rgb */ color: rgb(31, 47, 158);
/* oklch */ color: oklch(37.7% 0.178 268.8);

Tailwind

colors: {
  custom: {
    50: '#7268bc',
    500: '#1f2f9e',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f9e;
$custom-light: #7268bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f9e",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 158
  },
  "hsl": {
    "h": 232.441,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.37749,
    "c": 0.17818,
    "h": 268.8
  },
  "luminance": 0.04793
}

Semantic roles & 50–950 ramp

primary

#1F2F9E

secondary

#C2B556

accent

#D43EEA

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1F2F9E

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

Preview Lab → · Contrast checker → · Palette generator →