#1F2175#1F2175

#1F2175 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.1% C 0.140 H 273.7°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#1F2175
RGB	rgb(31, 33, 117)
HSL	hsl(239, 58%, 29%)
HSV	hsv(239, 74%, 46%)
CMYK	cmyk(73.5%, 71.8%, 0%, 54.1%)
CIE-LAB	lab(18.64, 29.11, -48.21)
CIE-LCH	lch(18.64, 56.31, 301.12°)
OKLab	oklab(31.07% 0.009 -0.1393)
OKLCH	oklch(31.07% 0.14 273.7)
XYZ	xyz(4.3187, 2.6630, 17.1126)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2175 #75731F

analogous

#1F4C75 #1F2175 #481F75

triadic

#1F2175 #751F21 #21751F

tetradic

#1F2175 #751F4C #75731F #1F7548

square

#1F2175 #751F4C #75731F #1F7548

split-complementary

#1F2175 #75481F #4C751F

monochromatic

#060718 #121345 #1F2175 #2C2FA5 #4245CD

Accessibility & contrast

On white

13.70

#1F2175 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F2175 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2175

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2175	#FFFFFF	#000000	##FFFFFF
##1F2175	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003178

Deuteranopia (green-blind)

#002973

Tritanopia (blue-blind)

#003848

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f2175;
/* rgb */ color: rgb(31, 33, 117);
/* oklch */ color: oklch(31.1% 0.140 273.7);

Tailwind

colors: {
  custom: {
    50: '#695d9e',
    500: '#1f2175',
    950: '#000000',
  },
}

SCSS

$custom: #1f2175;
$custom-light: #695d9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2175",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 117
  },
  "hsl": {
    "h": 238.605,
    "s": 58.108,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31072,
    "c": 0.13963,
    "h": 273.7
  },
  "luminance": 0.02663
}

Semantic roles & 50–950 ramp

primary

#1F2175

secondary

#A9A647

accent

#DE46E1

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F2175

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

Preview Lab → · Contrast checker → · Palette generator →