#101F4E#101F4E

#101F4E is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.9% C 0.089 H 266.7°. Best body text is #FFFFFF at 15.81:1 contrast (WCAG AA passes).

Color values

HEX	#101F4E
RGB	rgb(16, 31, 78)
HSL	hsl(225, 66%, 18%)
HSV	hsv(225, 79%, 31%)
CMYK	cmyk(79.5%, 60.3%, 0%, 69.4%)
CIE-LAB	lab(13.47, 12.78, -30.85)
CIE-LCH	lch(13.47, 33.40, 292.51°)
OKLab	oklab(25.88% -0.0052 -0.0889)
OKLCH	oklch(25.88% 0.089 266.7)
XYZ	xyz(2.0783, 1.6400, 7.4133)
Luminance	0.0164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F4E #4E3F10

analogous

#103E4E #101F4E #20104E

triadic

#101F4E #4E101F #1F4E10

tetradic

#101F4E #4E103E #4E3F10 #104E20

square

#101F4E #4E103E #4E3F10 #104E20

split-complementary

#101F4E #4E2010 #3E4E10

monochromatic

#050A19 #060B1B #101F4E #1A3381 #2547B4

Accessibility & contrast

On white

15.81

#101F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#101F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F4E

15.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F4E	#FFFFFF	#000000	##FFFFFF
##101F4E	1.00	15.81	1.33	15.81
#FFFFFF	15.81	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002550

Deuteranopia (green-blind)

#00204D

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101f4e;
/* rgb */ color: rgb(16, 31, 78);
/* oklch */ color: oklch(25.9% 0.089 266.7);

Tailwind

colors: {
  custom: {
    50: '#585a80',
    500: '#101f4e',
    950: '#000000',
  },
}

SCSS

$custom: #101f4e;
$custom-light: #585a80;
$custom-dark: #000000;

JSON

{
  "hex": "#101f4e",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 78
  },
  "hsl": {
    "h": 225.484,
    "s": 65.957,
    "l": 18.431
  },
  "oklch": {
    "l": 0.25877,
    "c": 0.08901,
    "h": 266.7
  },
  "luminance": 0.0164
}

Semantic roles & 50–950 ramp

primary

#101F4E

secondary

#887332

accent

#C03FE9

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #101F4E

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

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