#1F298C#1F298C

#1F298C is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.9% C 0.161 H 270.5°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#1F298C
RGB	rgb(31, 41, 140)
HSL	hsl(234, 64%, 34%)
HSV	hsv(234, 78%, 55%)
CMYK	cmyk(77.9%, 70.7%, 0%, 45.1%)
CIE-LAB	lab(22.90, 32.42, -55.75)
CIE-LCH	lch(22.90, 64.49, 300.18°)
OKLab	oklab(34.86% 0.0013 -0.1614)
OKLCH	oklch(34.86% 0.161 270.5)
XYZ	xyz(6.0900, 3.7700, 25.2126)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F298C #8C821F

analogous

#1F5F8C #1F298C #4B1F8C

triadic

#1F298C #8C1F29 #298C1F

tetradic

#1F298C #8C1F5F #8C821F #1F8C4B

square

#1F298C #8C1F5F #8C821F #1F8C4B

split-complementary

#1F298C #8C4B1F #5F8C1F

monochromatic

#090C28 #141A5A #1F298C #2A38BE #4E5AD8

Accessibility & contrast

On white

11.97

#1F298C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1F298C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F298C

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F298C	#FFFFFF	#000000	##FFFFFF
##1F298C	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8F

Deuteranopia (green-blind)

#00318A

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f298c;
/* rgb */ color: rgb(31, 41, 140);
/* oklch */ color: oklch(34.9% 0.161 270.5);

Tailwind

colors: {
  custom: {
    50: '#6e63af',
    500: '#1f298c',
    950: '#000000',
  },
}

SCSS

$custom: #1f298c;
$custom-light: #6e63af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f298c",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 140
  },
  "hsl": {
    "h": 234.495,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34856,
    "c": 0.16138,
    "h": 270.5
  },
  "luminance": 0.03771
}

Semantic roles & 50–950 ramp

primary

#1F298C

secondary

#BBB04C

accent

#D841E7

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F298C

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

Preview Lab → · Contrast checker → · Palette generator →