#1F117C#1F117C

#1F117C is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.6% C 0.165 H 275.4°. Best body text is #FFFFFF at 14.69:1 contrast (WCAG AA passes).

Color values

HEX	#1F117C
RGB	rgb(31, 17, 124)
HSL	hsl(248, 76%, 28%)
HSV	hsv(248, 86%, 49%)
CMYK	cmyk(75%, 86.3%, 0%, 51.4%)
CIE-LAB	lab(16.24, 40.60, -56.66)
CIE-LCH	lch(16.24, 69.70, 305.62°)
OKLab	oklab(29.62% 0.0155 -0.1638)
OKLCH	oklch(29.62% 0.165 275.4)
XYZ	xyz(4.4024, 2.1470, 19.2473)
Luminance	0.0215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F117C #6E7C11

analogous

#11397C #1F117C #54117C

triadic

#1F117C #7C1F11 #117C1F

tetradic

#1F117C #7C1139 #6E7C11 #117C54

square

#1F117C #7C1139 #6E7C11 #117C54

split-complementary

#1F117C #7C5411 #397C11

monochromatic

#07041B #120A46 #1F117C #2C18B2 #3F26E1

Accessibility & contrast

On white

14.69

#1F117C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1F117C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F117C

14.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F117C	#FFFFFF	#000000	##FFFFFF
##1F117C	1.00	14.69	1.43	14.69
#FFFFFF	14.69	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7F

Deuteranopia (green-blind)

#00237A

Tritanopia (blue-blind)

#003448

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1f117c;
/* rgb */ color: rgb(31, 17, 124);
/* oklch */ color: oklch(29.6% 0.165 275.4);

Tailwind

colors: {
  custom: {
    50: '#6c53a3',
    500: '#1f117c',
    950: '#000000',
  },
}

SCSS

$custom: #1f117c;
$custom-light: #6c53a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f117c",
  "rgb": {
    "r": 31,
    "g": 17,
    "b": 124
  },
  "hsl": {
    "h": 247.85,
    "s": 75.887,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29615,
    "c": 0.1645,
    "h": 275.4
  },
  "luminance": 0.02147
}

Semantic roles & 50–950 ramp

primary

#1F117C

secondary

#A2B237

accent

#F235DA

background

#F7F4FA

surface

#EDE8F4

border

#C8C4CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F117C

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

Preview Lab → · Contrast checker → · Palette generator →