#101F4F#101F4F

#101F4F is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.0% C 0.091 H 266.8°. Best body text is #FFFFFF at 15.78:1 contrast (WCAG AA passes).

Color values

HEX	#101F4F
RGB	rgb(16, 31, 79)
HSL	hsl(226, 66%, 19%)
HSV	hsv(226, 80%, 31%)
CMYK	cmyk(79.7%, 60.8%, 0%, 69%)
CIE-LAB	lab(13.56, 13.22, -31.40)
CIE-LCH	lch(13.56, 34.07, 292.83°)
OKLab	oklab(25.97% -0.0051 -0.0905)
OKLCH	oklch(25.97% 0.091 266.8)
XYZ	xyz(2.1145, 1.6544, 7.6035)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F4F #4F4010

analogous

#103E4F #101F4F #20104F

triadic

#101F4F #4F101F #1F4F10

tetradic

#101F4F #4F103E #4F4010 #104F20

square

#101F4F #4F103E #4F4010 #104F20

split-complementary

#101F4F #4F2010 #3E4F10

monochromatic

#050A19 #060B1C #101F4F #1A3382 #2547B5

Accessibility & contrast

On white

15.78

#101F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#101F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F4F

15.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F4F	#FFFFFF	#000000	##FFFFFF
##101F4F	1.00	15.78	1.33	15.78
#FFFFFF	15.78	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002651

Deuteranopia (green-blind)

#00204E

Tritanopia (blue-blind)

#002B33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101f4f;
/* rgb */ color: rgb(16, 31, 79);
/* oklch */ color: oklch(26.0% 0.091 266.8);

Tailwind

colors: {
  custom: {
    50: '#595a81',
    500: '#101f4f',
    950: '#000000',
  },
}

SCSS

$custom: #101f4f;
$custom-light: #595a81;
$custom-dark: #000000;

JSON

{
  "hex": "#101f4f",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 79
  },
  "hsl": {
    "h": 225.714,
    "s": 66.316,
    "l": 18.627
  },
  "oklch": {
    "l": 0.25969,
    "c": 0.0906,
    "h": 266.8
  },
  "luminance": 0.01655
}

Semantic roles & 50–950 ramp

primary

#101F4F

secondary

#897432

accent

#C13FE9

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #101F4F

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

Preview Lab → · Contrast checker → · Palette generator →