#1F297E#1F297E

#1F297E is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.4% C 0.142 H 271.0°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F297E
RGB	rgb(31, 41, 126)
HSL	hsl(234, 61%, 31%)
HSV	hsv(234, 75%, 49%)
CMYK	cmyk(75.4%, 67.5%, 0%, 50.6%)
CIE-LAB	lab(21.52, 27.16, -49.23)
CIE-LCH	lch(21.52, 56.22, 298.88°)
OKLab	oklab(33.43% 0.0026 -0.1423)
OKLCH	oklch(33.43% 0.142 271)
XYZ	xyz(5.1226, 3.3830, 20.1176)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F297E #7E741F

analogous

#1F587E #1F297E #441F7E

triadic

#1F297E #7E1F29 #297E1F

tetradic

#1F297E #7E1F58 #7E741F #1F7E44

square

#1F297E #7E1F58 #7E741F #1F7E44

split-complementary

#1F297E #7E441F #587E1F

monochromatic

#07091C #13194D #1F297E #2B39AF #4655D1

Accessibility & contrast

On white

12.52

#1F297E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1F297E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F297E

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F297E	#FFFFFF	#000000	##FFFFFF
##1F297E	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003881

Deuteranopia (green-blind)

#002F7C

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f297e;
/* rgb */ color: rgb(31, 41, 126);
/* oklch */ color: oklch(33.4% 0.142 271.0);

Tailwind

colors: {
  custom: {
    50: '#6a62a4',
    500: '#1f297e',
    950: '#000000',
  },
}

SCSS

$custom: #1f297e;
$custom-light: #6a62a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f297e",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 126
  },
  "hsl": {
    "h": 233.684,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33433,
    "c": 0.14232,
    "h": 271
  },
  "luminance": 0.03384
}

Semantic roles & 50–950 ramp

primary

#1F297E

secondary

#B1A648

accent

#D344E4

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1F297E

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

Preview Lab → · Contrast checker → · Palette generator →