#1F20B1#1F20B1

#1F20B1 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.7% C 0.216 H 269.5°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#1F20B1
RGB	rgb(31, 32, 177)
HSL	hsl(240, 70%, 41%)
HSV	hsv(240, 82%, 69%)
CMYK	cmyk(82.5%, 81.9%, 0%, 30.6%)
CIE-LAB	lab(25.25, 50.21, -74.44)
CIE-LCH	lch(25.25, 89.79, 304.00°)
OKLab	oklab(37.74% -0.0017 -0.2155)
OKLCH	oklch(37.74% 0.216 269.5)
XYZ	xyz(9.0147, 4.4976, 41.9795)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F20B1 #B1B01F

analogous

#1F69B1 #1F20B1 #671FB1

triadic

#1F20B1 #B11F20 #20B11F

tetradic

#1F20B1 #B11F69 #B1B01F #1FB167

square

#1F20B1 #B11F69 #B1B01F #1FB167

split-complementary

#1F20B1 #B1671F #69B11F

monochromatic

#0D0D49 #16177D #1F20B1 #3233DB #6667E4

Accessibility & contrast

On white

11.05

#1F20B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1F20B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F20B1

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F20B1	#FFFFFF	#000000	##FFFFFF
##1F20B1	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B5

Deuteranopia (green-blind)

#0034AF

Tritanopia (blue-blind)

#004F6A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f20b1;
/* rgb */ color: rgb(31, 32, 177);
/* oklch */ color: oklch(37.7% 0.216 269.5);

Tailwind

colors: {
  custom: {
    50: '#785fca',
    500: '#1f20b1',
    950: '#000000',
  },
}

SCSS

$custom: #1f20b1;
$custom-light: #785fca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f20b1",
  "rgb": {
    "r": 31,
    "g": 32,
    "b": 177
  },
  "hsl": {
    "h": 239.589,
    "s": 70.192,
    "l": 40.784
  },
  "oklch": {
    "l": 0.37744,
    "c": 0.21555,
    "h": 269.5
  },
  "luminance": 0.04499
}

Semantic roles & 50–950 ramp

primary

#1F20B1

secondary

#CAC962

accent

#EC3BED

background

#F8F5FC

surface

#EFEAF9

border

#CAC6D2

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #1F20B1

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

Preview Lab → · Contrast checker → · Palette generator →