#1F24B3#1F24B3

#1F24B3 is a dark, highly saturated blue. Relative luminance 0.048; OKLCH L 38.5% C 0.215 H 269.2°. Best body text is #FFFFFF at 10.71:1 contrast (WCAG AA passes).

Color values

HEX	#1F24B3
RGB	rgb(31, 36, 179)
HSL	hsl(238, 70%, 41%)
HSV	hsv(238, 83%, 70%)
CMYK	cmyk(82.7%, 79.9%, 0%, 29.8%)
CIE-LAB	lab(26.18, 48.85, -74.10)
CIE-LCH	lch(26.18, 88.76, 303.40°)
OKLab	oklab(38.46% -0.0029 -0.2146)
OKLCH	oklch(38.46% 0.215 269.2)
XYZ	xyz(9.3299, 4.8066, 43.0751)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F24B3 #B3AE1F

analogous

#1F6EB3 #1F24B3 #641FB3

triadic

#1F24B3 #B31F24 #24B31F

tetradic

#1F24B3 #B31F6E #B3AE1F #1FB364

square

#1F24B3 #B31F6E #B3AE1F #1FB364

split-complementary

#1F24B3 #B3641F #6EB31F

monochromatic

#0D0F4B #161A7F #1F24B3 #3339DC #686CE5

Accessibility & contrast

On white

10.71

#1F24B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1F24B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F24B3

10.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F24B3	#FFFFFF	#000000	##FFFFFF
##1F24B3	1.00	10.71	1.96	10.71
#FFFFFF	10.71	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045B7

Deuteranopia (green-blind)

#0036B1

Tritanopia (blue-blind)

#00516C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1f24b3;
/* rgb */ color: rgb(31, 36, 179);
/* oklch */ color: oklch(38.5% 0.215 269.2);

Tailwind

colors: {
  custom: {
    50: '#7962cb',
    500: '#1f24b3',
    950: '#000000',
  },
}

SCSS

$custom: #1f24b3;
$custom-light: #7962cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f24b3",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 179
  },
  "hsl": {
    "h": 237.973,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.38457,
    "c": 0.21466,
    "h": 269.2
  },
  "luminance": 0.04808
}

Semantic roles & 50–950 ramp

primary

#1F24B3

secondary

#CAC764

accent

#E73BED

background

#F8F5FC

surface

#EFEAF9

border

#CAC6D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #1F24B3

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

Preview Lab → · Contrast checker → · Palette generator →