#1F298E#1F298E

#1F298E is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.1% C 0.164 H 270.4°. Best body text is #FFFFFF at 11.89:1 contrast (WCAG AA passes).

Color values

HEX	#1F298E
RGB	rgb(31, 41, 142)
HSL	hsl(235, 64%, 34%)
HSV	hsv(235, 78%, 56%)
CMYK	cmyk(78.2%, 71.1%, 0%, 44.3%)
CIE-LAB	lab(23.10, 33.16, -56.66)
CIE-LCH	lch(23.10, 65.65, 300.34°)
OKLab	oklab(35.07% 0.0011 -0.164)
OKLCH	oklch(35.07% 0.164 270.4)
XYZ	xyz(6.2388, 3.8295, 25.9963)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F298E #8E841F

analogous

#1F618E #1F298E #4D1F8E

triadic

#1F298E #8E1F29 #298E1F

tetradic

#1F298E #8E1F61 #8E841F #1F8E4D

square

#1F298E #8E1F61 #8E841F #1F8E4D

split-complementary

#1F298E #8E4D1F #618E1F

monochromatic

#090C2A #141A5C #1F298E #2A38C0 #4F5BD9

Accessibility & contrast

On white

11.89

#1F298E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F298E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F298E

11.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F298E	#FFFFFF	#000000	##FFFFFF
##1F298E	1.00	11.89	1.77	11.89
#FFFFFF	11.89	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C91

Deuteranopia (green-blind)

#00328C

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f298e;
/* rgb */ color: rgb(31, 41, 142);
/* oklch */ color: oklch(35.1% 0.164 270.4);

Tailwind

colors: {
  custom: {
    50: '#6e63b0',
    500: '#1f298e',
    950: '#000000',
  },
}

SCSS

$custom: #1f298e;
$custom-light: #6e63b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f298e",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 142
  },
  "hsl": {
    "h": 234.595,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.35065,
    "c": 0.16402,
    "h": 270.4
  },
  "luminance": 0.0383
}

Semantic roles & 50–950 ramp

primary

#1F298E

secondary

#BBB24D

accent

#D841E7

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #1F298E

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

Preview Lab → · Contrast checker → · Palette generator →