#1F2875#1F2875

#1F2875 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.4% C 0.131 H 271.7°. Best body text is #FFFFFF at 12.97:1 contrast (WCAG AA passes).

Color values

HEX	#1F2875
RGB	rgb(31, 40, 117)
HSL	hsl(234, 58%, 29%)
HSV	hsv(234, 74%, 46%)
CMYK	cmyk(73.5%, 65.8%, 0%, 54.1%)
CIE-LAB	lab(20.41, 24.38, -45.30)
CIE-LCH	lch(20.41, 51.45, 298.29°)
OKLab	oklab(32.36% 0.0039 -0.1308)
OKLCH	oklch(32.36% 0.131 271.7)
XYZ	xyz(4.5337, 3.0928, 17.1842)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2875 #756C1F

analogous

#1F5375 #1F2875 #411F75

triadic

#1F2875 #751F28 #28751F

tetradic

#1F2875 #751F53 #756C1F #1F7541

square

#1F2875 #751F53 #756C1F #1F7541

split-complementary

#1F2875 #75411F #53751F

monochromatic

#060818 #121745 #1F2875 #2C39A5 #4250CD

Accessibility & contrast

On white

12.97

#1F2875 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1F2875 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2875

12.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2875	#FFFFFF	#000000	##FFFFFF
##1F2875	1.00	12.97	1.62	12.97
#FFFFFF	12.97	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003577

Deuteranopia (green-blind)

#002D74

Tritanopia (blue-blind)

#003C4A

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1f2875;
/* rgb */ color: rgb(31, 40, 117);
/* oklch */ color: oklch(32.4% 0.131 271.7);

Tailwind

colors: {
  custom: {
    50: '#68629e',
    500: '#1f2875',
    950: '#000000',
  },
}

SCSS

$custom: #1f2875;
$custom-light: #68629e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2875",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 117
  },
  "hsl": {
    "h": 233.721,
    "s": 58.108,
    "l": 29.02
  },
  "oklch": {
    "l": 0.32363,
    "c": 0.13087,
    "h": 271.7
  },
  "luminance": 0.03093
}

Semantic roles & 50–950 ramp

primary

#1F2875

secondary

#A99E47

accent

#D146E1

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F2875

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

Preview Lab → · Contrast checker → · Palette generator →