#1F297D#1F297D

#1F297D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.3% C 0.141 H 271.1°. Best body text is #FFFFFF at 12.56:1 contrast (WCAG AA passes).

Color values

HEX	#1F297D
RGB	rgb(31, 41, 125)
HSL	hsl(234, 60%, 31%)
HSV	hsv(234, 75%, 49%)
CMYK	cmyk(75.2%, 67.2%, 0%, 51%)
CIE-LAB	lab(21.42, 26.77, -48.75)
CIE-LCH	lch(21.42, 55.62, 298.78°)
OKLab	oklab(33.33% 0.0027 -0.1409)
OKLCH	oklch(33.33% 0.141 271.1)
XYZ	xyz(5.0584, 3.3573, 19.7795)
Luminance	0.0336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F297D #7D731F

analogous

#1F587D #1F297D #441F7D

triadic

#1F297D #7D1F29 #297D1F

tetradic

#1F297D #7D1F58 #7D731F #1F7D44

square

#1F297D #7D1F58 #7D731F #1F7D44

split-complementary

#1F297D #7D441F #587D1F

monochromatic

#07091B #13194C #1F297D #2B39AE #4554D1

Accessibility & contrast

On white

12.56

#1F297D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F297D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F297D

12.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F297D	#FFFFFF	#000000	##FFFFFF
##1F297D	1.00	12.56	1.67	12.56
#FFFFFF	12.56	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003880

Deuteranopia (green-blind)

#002F7B

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f297d;
/* rgb */ color: rgb(31, 41, 125);
/* oklch */ color: oklch(33.3% 0.141 271.1);

Tailwind

colors: {
  custom: {
    50: '#6a62a3',
    500: '#1f297d',
    950: '#000000',
  },
}

SCSS

$custom: #1f297d;
$custom-light: #6a62a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f297d",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 125
  },
  "hsl": {
    "h": 233.617,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.33334,
    "c": 0.14093,
    "h": 271.1
  },
  "luminance": 0.03358
}

Semantic roles & 50–950 ramp

primary

#1F297D

secondary

#B0A548

accent

#D244E3

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F297D

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

Preview Lab → · Contrast checker → · Palette generator →