#1F298D#1F298D

#1F298D is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.0% C 0.163 H 270.4°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#1F298D
RGB	rgb(31, 41, 141)
HSL	hsl(235, 64%, 34%)
HSV	hsv(235, 78%, 55%)
CMYK	cmyk(78%, 70.9%, 0%, 44.7%)
CIE-LAB	lab(23.00, 32.79, -56.21)
CIE-LCH	lch(23.00, 65.07, 300.26°)
OKLab	oklab(34.96% 0.0012 -0.1627)
OKLCH	oklch(34.96% 0.163 270.4)
XYZ	xyz(6.1641, 3.7996, 25.6027)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F298D #8D831F

analogous

#1F608D #1F298D #4C1F8D

triadic

#1F298D #8D1F29 #298D1F

tetradic

#1F298D #8D1F60 #8D831F #1F8D4C

square

#1F298D #8D1F60 #8D831F #1F8D4C

split-complementary

#1F298D #8D4C1F #608D1F

monochromatic

#090C29 #141A5B #1F298D #2A38BF #4E5BD8

Accessibility & contrast

On white

11.93

#1F298D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1F298D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F298D

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F298D	#FFFFFF	#000000	##FFFFFF
##1F298D	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C90

Deuteranopia (green-blind)

#00328B

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f298d;
/* rgb */ color: rgb(31, 41, 141);
/* oklch */ color: oklch(35.0% 0.163 270.4);

Tailwind

colors: {
  custom: {
    50: '#6e63af',
    500: '#1f298d',
    950: '#000000',
  },
}

SCSS

$custom: #1f298d;
$custom-light: #6e63af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f298d",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 141
  },
  "hsl": {
    "h": 234.545,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.3496,
    "c": 0.1627,
    "h": 270.4
  },
  "luminance": 0.038
}

Semantic roles & 50–950 ramp

primary

#1F298D

secondary

#BBB14D

accent

#D841E7

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080511

muted

#7B7980

Preview Lab

Preview with #1F298D

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

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