#1F298F#1F298F

#1F298F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.165 H 270.3°. Best body text is #FFFFFF at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#1F298F
RGB	rgb(31, 41, 143)
HSL	hsl(235, 64%, 34%)
HSV	hsv(235, 78%, 56%)
CMYK	cmyk(78.3%, 71.3%, 0%, 43.9%)
CIE-LAB	lab(23.20, 33.53, -57.11)
CIE-LCH	lch(23.20, 66.23, 300.41°)
OKLab	oklab(35.17% 0.001 -0.1653)
OKLCH	oklch(35.17% 0.165 270.3)
XYZ	xyz(6.3142, 3.8597, 26.3935)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F298F #8F851F

analogous

#1F618F #1F298F #4D1F8F

triadic

#1F298F #8F1F29 #298F1F

tetradic

#1F298F #8F1F61 #8F851F #1F8F4D

square

#1F298F #8F1F61 #8F851F #1F8F4D

split-complementary

#1F298F #8F4D1F #618F1F

monochromatic

#090C2A #141B5D #1F298F #2A37C1 #4F5CD9

Accessibility & contrast

On white

11.85

#1F298F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F298F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F298F

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F298F	#FFFFFF	#000000	##FFFFFF
##1F298F	1.00	11.85	1.77	11.85
#FFFFFF	11.85	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D92

Deuteranopia (green-blind)

#00328D

Tritanopia (blue-blind)

#004559

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f298f;
/* rgb */ color: rgb(31, 41, 143);
/* oklch */ color: oklch(35.2% 0.165 270.3);

Tailwind

colors: {
  custom: {
    50: '#6f63b1',
    500: '#1f298f',
    950: '#000000',
  },
}

SCSS

$custom: #1f298f;
$custom-light: #6f63b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f298f",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 143
  },
  "hsl": {
    "h": 234.643,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.35169,
    "c": 0.16534,
    "h": 270.3
  },
  "luminance": 0.0386
}

Semantic roles & 50–950 ramp

primary

#1F298F

secondary

#BCB24E

accent

#D840E7

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F298F

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

Preview Lab → · Contrast checker → · Palette generator →