#1F2B9E#1F2B9E

#1F2B9E is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.1% C 0.183 H 269.4°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B9E
RGB	rgb(31, 43, 158)
HSL	hsl(234, 67%, 37%)
HSV	hsv(234, 80%, 62%)
CMYK	cmyk(80.4%, 72.8%, 0%, 38%)
CIE-LAB	lab(25.22, 37.72, -63.01)
CIE-LCH	lch(25.22, 73.44, 300.91°)
OKLab	oklab(37.09% -0.0018 -0.1825)
OKLCH	oklch(37.09% 0.183 269.4)
XYZ	xyz(7.5984, 4.4868, 32.8067)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B9E #9E921F

analogous

#1F6A9E #1F2B9E #531F9E

triadic

#1F2B9E #9E1F2B #2B9E1F

tetradic

#1F2B9E #9E1F6A #9E921F #1F9E53

square

#1F2B9E #9E1F6A #9E921F #1F9E53

split-complementary

#1F2B9E #9E531F #6A9E1F

monochromatic

#0B0F38 #151D6B #1F2B9E #2939D1 #5966DE

Accessibility & contrast

On white

11.07

#1F2B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1F2B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B9E

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B9E	#FFFFFF	#000000	##FFFFFF
##1F2B9E	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A1

Deuteranopia (green-blind)

#00369C

Tritanopia (blue-blind)

#004C61

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f2b9e;
/* rgb */ color: rgb(31, 43, 158);
/* oklch */ color: oklch(37.1% 0.183 269.4);

Tailwind

colors: {
  custom: {
    50: '#7265bc',
    500: '#1f2b9e',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b9e;
$custom-light: #7265bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b9e",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 158
  },
  "hsl": {
    "h": 234.331,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.3709,
    "c": 0.18254,
    "h": 269.4
  },
  "luminance": 0.04488
}

Semantic roles & 50–950 ramp

primary

#1F2B9E

secondary

#C2B856

accent

#DA3EEA

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1F2B9E

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

Preview Lab → · Contrast checker → · Palette generator →