#1F186E#1F186E

#1F186E is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.9% C 0.140 H 276.6°. Best body text is #FFFFFF at 14.85:1 contrast (WCAG AA passes).

Color values

HEX	#1F186E
RGB	rgb(31, 24, 110)
HSL	hsl(245, 64%, 26%)
HSV	hsv(245, 78%, 43%)
CMYK	cmyk(71.8%, 78.2%, 0%, 56.9%)
CIE-LAB	lab(15.85, 32.25, -48.27)
CIE-LCH	lch(15.85, 58.05, 303.75°)
OKLab	oklab(28.85% 0.0161 -0.1395)
OKLCH	oklch(28.85% 0.14 276.6)
XYZ	xyz(3.7053, 2.0700, 14.9531)
Luminance	0.0207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F186E #676E18

analogous

#183C6E #1F186E #4A186E

triadic

#1F186E #6E1F18 #186E1F

tetradic

#1F186E #6E183C #676E18 #186E4A

square

#1F186E #6E183C #676E18 #186E4A

split-complementary

#1F186E #6E4A18 #3C6E18

monochromatic

#070519 #110D3C #1F186E #2D23A0 #3C2FD2

Accessibility & contrast

On white

14.85

#1F186E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1F186E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F186E

14.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F186E	#FFFFFF	#000000	##FFFFFF
##1F186E	1.00	14.85	1.41	14.85
#FFFFFF	14.85	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B70

Deuteranopia (green-blind)

#00246C

Tritanopia (blue-blind)

#003142

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f186e;
/* rgb */ color: rgb(31, 24, 110);
/* oklch */ color: oklch(28.9% 0.140 276.6);

Tailwind

colors: {
  custom: {
    50: '#685699',
    500: '#1f186e',
    950: '#000000',
  },
}

SCSS

$custom: #1f186e;
$custom-light: #685699;
$custom-dark: #000000;

JSON

{
  "hex": "#1f186e",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 110
  },
  "hsl": {
    "h": 244.884,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.28853,
    "c": 0.14042,
    "h": 276.6
  },
  "luminance": 0.0207
}

Semantic roles & 50–950 ramp

primary

#1F186E

secondary

#9BA43E

accent

#E741DA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F186E

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

Preview Lab → · Contrast checker → · Palette generator →