#1F315E#1F315E

#1F315E is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.4% C 0.083 H 265.6°. Best body text is #FFFFFF at 12.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F315E
RGB	rgb(31, 49, 94)
HSL	hsl(223, 50%, 25%)
HSV	hsv(223, 67%, 37%)
CMYK	cmyk(67%, 47.9%, 0%, 63.1%)
CIE-LAB	lab(21.19, 8.89, -29.11)
CIE-LCH	lch(21.19, 30.44, 286.98°)
OKLab	oklab(32.37% -0.0064 -0.0831)
OKLCH	oklch(32.37% 0.083 265.6)
XYZ	xyz(3.6831, 3.2958, 11.0296)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F315E #5E4C1F

analogous

#1F515E #1F315E #2D1F5E

triadic

#1F315E #5E1F31 #315E1F

tetradic

#1F315E #5E1F51 #5E4C1F #1F5E2D

square

#1F315E #5E1F51 #5E4C1F #1F5E2D

split-complementary

#1F315E #5E2D1F #515E1F

monochromatic

#080C17 #101930 #1F315E #2E498C #3D61BA

Accessibility & contrast

On white

12.66

#1F315E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1F315E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F315E

12.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F315E	#FFFFFF	#000000	##FFFFFF
##1F315E	1.00	12.66	1.66	12.66
#FFFFFF	12.66	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C3660

Deuteranopia (green-blind)

#12305D

Tritanopia (blue-blind)

#003B43

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f315e;
/* rgb */ color: rgb(31, 49, 94);
/* oklch */ color: oklch(32.4% 0.083 265.6);

Tailwind

colors: {
  custom: {
    50: '#62688c',
    500: '#1f315e',
    950: '#000000',
  },
}

SCSS

$custom: #1f315e;
$custom-light: #62688c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f315e",
  "rgb": {
    "r": 31,
    "g": 49,
    "b": 94
  },
  "hsl": {
    "h": 222.857,
    "s": 50.4,
    "l": 24.51
  },
  "oklch": {
    "l": 0.32369,
    "c": 0.08333,
    "h": 265.6
  },
  "luminance": 0.03296
}

Semantic roles & 50–950 ramp

primary

#1F315E

secondary

#937D46

accent

#B24EDA

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05060C

muted

#7A7A7D

Preview Lab

Preview with #1F315E

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

Preview Lab → · Contrast checker → · Palette generator →