#1F298A#1F298A

#1F298A is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.6% C 0.159 H 270.5°. Best body text is #FFFFFF at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#1F298A
RGB	rgb(31, 41, 138)
HSL	hsl(234, 63%, 33%)
HSV	hsv(234, 78%, 54%)
CMYK	cmyk(77.5%, 70.3%, 0%, 45.9%)
CIE-LAB	lab(22.69, 31.68, -54.84)
CIE-LCH	lch(22.69, 63.33, 300.01°)
OKLab	oklab(34.65% 0.0015 -0.1587)
OKLCH	oklch(34.65% 0.159 270.5)
XYZ	xyz(5.9439, 3.7115, 24.4430)
Luminance	0.0371 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F298A #8A801F

analogous

#1F5E8A #1F298A #4B1F8A

triadic

#1F298A #8A1F29 #298A1F

tetradic

#1F298A #8A1F5E #8A801F #1F8A4B

square

#1F298A #8A1F5E #8A801F #1F8A4B

split-complementary

#1F298A #8A4B1F #5E8A1F

monochromatic

#090B26 #141A58 #1F298A #2A38BC #4C59D7

Accessibility & contrast

On white

12.05

#1F298A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1F298A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F298A

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F298A	#FFFFFF	#000000	##FFFFFF
##1F298A	1.00	12.05	1.74	12.05
#FFFFFF	12.05	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8D

Deuteranopia (green-blind)

#003188

Tritanopia (blue-blind)

#004456

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f298a;
/* rgb */ color: rgb(31, 41, 138);
/* oklch */ color: oklch(34.6% 0.159 270.5);

Tailwind

colors: {
  custom: {
    50: '#6d63ad',
    500: '#1f298a',
    950: '#000000',
  },
}

SCSS

$custom: #1f298a;
$custom-light: #6d63ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f298a",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 138
  },
  "hsl": {
    "h": 234.393,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.34648,
    "c": 0.15871,
    "h": 270.5
  },
  "luminance": 0.03712
}

Semantic roles & 50–950 ramp

primary

#1F298A

secondary

#BAAF4B

accent

#D741E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F298A

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

Preview Lab → · Contrast checker → · Palette generator →