#1F2B9C#1F2B9C

#1F2B9C is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.9% C 0.180 H 269.5°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B9C
RGB	rgb(31, 43, 156)
HSL	hsl(234, 67%, 37%)
HSV	hsv(234, 80%, 61%)
CMYK	cmyk(80.1%, 72.4%, 0%, 38.8%)
CIE-LAB	lab(25.01, 37.00, -62.14)
CIE-LCH	lch(25.01, 72.32, 300.77°)
OKLab	oklab(36.88% -0.0016 -0.18)
OKLCH	oklch(36.88% 0.18 269.5)
XYZ	xyz(7.4276, 4.4185, 31.9074)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B9C #9C901F

analogous

#1F6A9C #1F2B9C #521F9C

triadic

#1F2B9C #9C1F2B #2B9C1F

tetradic

#1F2B9C #9C1F6A #9C901F #1F9C52

square

#1F2B9C #9C1F6A #9C901F #1F9C52

split-complementary

#1F2B9C #9C521F #6A9C1F

monochromatic

#0B0F36 #151D69 #1F2B9C #2939CF #5865DE

Accessibility & contrast

On white

11.15

#1F2B9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1F2B9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B9C

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B9C	#FFFFFF	#000000	##FFFFFF
##1F2B9C	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419F

Deuteranopia (green-blind)

#00359A

Tritanopia (blue-blind)

#004B60

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f2b9c;
/* rgb */ color: rgb(31, 43, 156);
/* oklch */ color: oklch(36.9% 0.180 269.5);

Tailwind

colors: {
  custom: {
    50: '#7265ba',
    500: '#1f2b9c',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b9c;
$custom-light: #7265ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b9c",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 156
  },
  "hsl": {
    "h": 234.24,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.36876,
    "c": 0.17999,
    "h": 269.5
  },
  "luminance": 0.04419
}

Semantic roles & 50–950 ramp

primary

#1F2B9C

secondary

#C1B755

accent

#D93EEA

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1F2B9C

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

Preview Lab → · Contrast checker → · Palette generator →