#1F2575#1F2575

#1F2575 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.8% C 0.135 H 272.6°. Best body text is #FFFFFF at 13.29:1 contrast (WCAG AA passes).

Color values

HEX	#1F2575
RGB	rgb(31, 37, 117)
HSL	hsl(236, 58%, 29%)
HSV	hsv(236, 74%, 46%)
CMYK	cmyk(73.5%, 68.4%, 0%, 54.1%)
CIE-LAB	lab(19.63, 26.44, -46.58)
CIE-LCH	lch(19.63, 53.56, 299.58°)
OKLab	oklab(31.79% 0.0062 -0.1346)
OKLCH	oklch(31.79% 0.135 272.6)
XYZ	xyz(4.4364, 2.8984, 17.1518)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2575 #756F1F

analogous

#1F5075 #1F2575 #441F75

triadic

#1F2575 #751F25 #25751F

tetradic

#1F2575 #751F50 #756F1F #1F7544

square

#1F2575 #751F50 #756F1F #1F7544

split-complementary

#1F2575 #75441F #50751F

monochromatic

#060818 #121645 #1F2575 #2C34A5 #424BCD

Accessibility & contrast

On white

13.29

#1F2575 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1F2575 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2575

13.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2575	#FFFFFF	#000000	##FFFFFF
##1F2575	1.00	13.29	1.58	13.29
#FFFFFF	13.29	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003478

Deuteranopia (green-blind)

#002C73

Tritanopia (blue-blind)

#003A49

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f2575;
/* rgb */ color: rgb(31, 37, 117);
/* oklch */ color: oklch(31.8% 0.135 272.6);

Tailwind

colors: {
  custom: {
    50: '#685f9e',
    500: '#1f2575',
    950: '#000000',
  },
}

SCSS

$custom: #1f2575;
$custom-light: #685f9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2575",
  "rgb": {
    "r": 31,
    "g": 37,
    "b": 117
  },
  "hsl": {
    "h": 235.814,
    "s": 58.108,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31792,
    "c": 0.13471,
    "h": 272.6
  },
  "luminance": 0.02899
}

Semantic roles & 50–950 ramp

primary

#1F2575

secondary

#A9A247

accent

#D746E1

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F2575

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

Preview Lab → · Contrast checker → · Palette generator →