#101F5E#101F5E

#101F5E is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.4% C 0.114 H 267.6°. Best body text is #FFFFFF at 15.22:1 contrast (WCAG AA passes).

Color values

HEX	#101F5E
RGB	rgb(16, 31, 94)
HSL	hsl(228, 71%, 22%)
HSV	hsv(228, 83%, 37%)
CMYK	cmyk(83%, 67%, 0%, 63.1%)
CIE-LAB	lab(14.94, 19.63, -39.26)
CIE-LCH	lch(14.94, 43.89, 296.56°)
OKLab	oklab(27.43% -0.0047 -0.1135)
OKLCH	oklch(27.43% 0.114 267.6)
XYZ	xyz(2.7233, 1.8980, 10.8103)
Luminance	0.0190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F5E #5E4F10

analogous

#10465E #101F5E #28105E

triadic

#101F5E #5E101F #1F5E10

tetradic

#101F5E #5E1046 #5E4F10 #105E28

square

#101F5E #5E1046 #5E4F10 #105E28

split-complementary

#101F5E #5E2810 #465E10

monochromatic

#04091A #070E2A #101F5E #193092 #2241C7

Accessibility & contrast

On white

15.22

#101F5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#101F5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F5E

15.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F5E	#FFFFFF	#000000	##FFFFFF
##101F5E	1.00	15.22	1.38	15.22
#FFFFFF	15.22	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002960

Deuteranopia (green-blind)

#00225D

Tritanopia (blue-blind)

#002F3B

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #101f5e;
/* rgb */ color: rgb(16, 31, 94);
/* oklch */ color: oklch(27.4% 0.114 267.6);

Tailwind

colors: {
  custom: {
    50: '#5d5a8c',
    500: '#101f5e',
    950: '#000000',
  },
}

SCSS

$custom: #101f5e;
$custom-light: #5d5a8c;
$custom-dark: #000000;

JSON

{
  "hex": "#101f5e",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 94
  },
  "hsl": {
    "h": 228.462,
    "s": 70.909,
    "l": 21.569
  },
  "oklch": {
    "l": 0.27433,
    "c": 0.11365,
    "h": 267.6
  },
  "luminance": 0.01898
}

Semantic roles & 50–950 ramp

primary

#101F5E

secondary

#978433

accent

#CB3AEE

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101F5E

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

Preview Lab → · Contrast checker → · Palette generator →