#1F148E#1F148E

#1F148E is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.2% C 0.184 H 272.9°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F148E
RGB	rgb(31, 20, 142)
HSL	hsl(245, 75%, 32%)
HSV	hsv(245, 86%, 56%)
CMYK	cmyk(78.2%, 85.9%, 0%, 44.3%)
CIE-LAB	lab(18.99, 44.86, -63.46)
CIE-LCH	lch(18.99, 77.71, 305.25°)
OKLab	oklab(32.16% 0.0093 -0.1835)
OKLCH	oklch(32.16% 0.184 272.9)
XYZ	xyz(5.6961, 2.7440, 25.8154)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F148E #838E14

analogous

#14468E #1F148E #5C148E

triadic

#1F148E #8E1F14 #148E1F

tetradic

#1F148E #8E1446 #838E14 #148E5C

square

#1F148E #8E1446 #838E14 #148E5C

split-complementary

#1F148E #8E5C14 #468E14

monochromatic

#080523 #130C58 #1F148E #2B1CC4 #4939E3

Accessibility & contrast

On white

13.56

#1F148E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1F148E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F148E

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F148E	#FFFFFF	#000000	##FFFFFF
##1F148E	1.00	13.56	1.55	13.56
#FFFFFF	13.56	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003491

Deuteranopia (green-blind)

#00288C

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f148e;
/* rgb */ color: rgb(31, 20, 142);
/* oklch */ color: oklch(32.2% 0.184 272.9);

Tailwind

colors: {
  custom: {
    50: '#7057b0',
    500: '#1f148e',
    950: '#000000',
  },
}

SCSS

$custom: #1f148e;
$custom-light: #7057b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f148e",
  "rgb": {
    "r": 31,
    "g": 20,
    "b": 142
  },
  "hsl": {
    "h": 245.41,
    "s": 75.309,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32162,
    "c": 0.18377,
    "h": 272.9
  },
  "luminance": 0.02745
}

Semantic roles & 50–950 ramp

primary

#1F148E

secondary

#B6C23C

accent

#F236E1

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F148E

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

Preview Lab → · Contrast checker → · Palette generator →