#1F39B4#1F39B4

#1F39B4 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.7% C 0.195 H 267.1°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#1F39B4
RGB	rgb(31, 57, 180)
HSL	hsl(230, 71%, 41%)
HSV	hsv(230, 83%, 71%)
CMYK	cmyk(82.8%, 68.3%, 0%, 29.4%)
CIE-LAB	lab(30.67, 36.94, -67.27)
CIE-LCH	lch(30.67, 76.75, 298.77°)
OKLab	oklab(41.7% -0.0098 -0.1949)
OKLCH	oklch(41.7% 0.195 267.1)
XYZ	xyz(10.2635, 6.5116, 43.8871)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F39B4 #B49A1F

analogous

#1F84B4 #1F39B4 #501FB4

triadic

#1F39B4 #B41F39 #39B41F

tetradic

#1F39B4 #B41F84 #B49A1F #1FB450

square

#1F39B4 #B41F84 #B49A1F #1FB450

split-complementary

#1F39B4 #B4501F #84B41F

monochromatic

#0D184C #162880 #1F39B4 #3451DC #687EE5

Accessibility & contrast

On white

9.12

#1F39B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1F39B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F39B4

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F39B4	#FFFFFF	#000000	##FFFFFF
##1F39B4	1.00	9.12	2.30	9.12
#FFFFFF	9.12	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB8

Deuteranopia (green-blind)

#0041B2

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f39b4;
/* rgb */ color: rgb(31, 57, 180);
/* oklch */ color: oklch(41.7% 0.195 267.1);

Tailwind

colors: {
  custom: {
    50: '#776fcc',
    500: '#1f39b4',
    950: '#000000',
  },
}

SCSS

$custom: #1f39b4;
$custom-light: #776fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f39b4",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 180
  },
  "hsl": {
    "h": 229.53,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41699,
    "c": 0.19519,
    "h": 267.1
  },
  "luminance": 0.06513
}

Semantic roles & 50–950 ramp

primary

#1F39B4

secondary

#CBB964

accent

#CE3AED

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1F39B4

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

Preview Lab → · Contrast checker → · Palette generator →