#1F166C#1F166C

#1F166C is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.3% C 0.140 H 277.3°. Best body text is #FFFFFF at 15.11:1 contrast (WCAG AA passes).

Color values

HEX	#1F166C
RGB	rgb(31, 22, 108)
HSL	hsl(246, 66%, 25%)
HSV	hsv(246, 80%, 42%)
CMYK	cmyk(71.3%, 79.6%, 0%, 57.6%)
CIE-LAB	lab(15.21, 32.74, -48.02)
CIE-LCH	lch(15.21, 58.12, 304.28°)
OKLab	oklab(28.33% 0.0178 -0.1388)
OKLCH	oklch(28.33% 0.14 277.3)
XYZ	xyz(3.5579, 1.9475, 14.3729)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F166C #636C16

analogous

#16386C #1F166C #4A166C

triadic

#1F166C #6C1F16 #166C1F

tetradic

#1F166C #6C1638 #636C16 #166C4A

square

#1F166C #6C1638 #636C16 #166C4A

split-complementary

#1F166C #6C4A16 #386C16

monochromatic

#070519 #100C39 #1F166C #2E209F #3C2BD2

Accessibility & contrast

On white

15.11

#1F166C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1F166C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F166C

15.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F166C	#FFFFFF	#000000	##FFFFFF
##1F166C	1.00	15.11	1.39	15.11
#FFFFFF	15.11	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6E

Deuteranopia (green-blind)

#00226A

Tritanopia (blue-blind)

#002F40

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f166c;
/* rgb */ color: rgb(31, 22, 108);
/* oklch */ color: oklch(28.3% 0.140 277.3);

Tailwind

colors: {
  custom: {
    50: '#675597',
    500: '#1f166c',
    950: '#000000',
  },
}

SCSS

$custom: #1f166c;
$custom-light: #675597;
$custom-dark: #000000;

JSON

{
  "hex": "#1f166c",
  "rgb": {
    "r": 31,
    "g": 22,
    "b": 108
  },
  "hsl": {
    "h": 246.279,
    "s": 66.154,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28334,
    "c": 0.1399,
    "h": 277.3
  },
  "luminance": 0.01948
}

Semantic roles & 50–950 ramp

primary

#1F166C

secondary

#98A23C

accent

#E93FD7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F166C

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

Preview Lab → · Contrast checker → · Palette generator →