#101C5D#101C5D

#101C5D is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.116 H 268.7°. Best body text is #FFFFFF at 15.60:1 contrast (WCAG AA passes).

Color values

HEX	#101C5D
RGB	rgb(16, 28, 93)
HSL	hsl(231, 71%, 21%)
HSV	hsv(231, 83%, 36%)
CMYK	cmyk(82.8%, 69.9%, 0%, 63.5%)
CIE-LAB	lab(14.01, 21.40, -40.13)
CIE-LCH	lch(14.01, 45.48, 298.07°)
OKLab	oklab(26.71% -0.0027 -0.1161)
OKLCH	oklch(26.71% 0.116 268.7)
XYZ	xyz(2.6040, 1.7307, 10.5506)
Luminance	0.0173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C5D #5D5110

analogous

#10435D #101C5D #2B105D

triadic

#101C5D #5D101C #1C5D10

tetradic

#101C5D #5D1043 #5D5110 #105D2B

square

#101C5D #5D1043 #5D5110 #105D2B

split-complementary

#101C5D #5D2B10 #435D10

monochromatic

#04081A #070C29 #101C5D #192C91 #223BC5

Accessibility & contrast

On white

15.60

#101C5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#101C5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C5D

15.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C5D	#FFFFFF	#000000	##FFFFFF
##101C5D	1.00	15.60	1.35	15.60
#FFFFFF	15.60	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275F

Deuteranopia (green-blind)

#00205C

Tritanopia (blue-blind)

#002D39

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #101c5d;
/* rgb */ color: rgb(16, 28, 93);
/* oklch */ color: oklch(26.7% 0.116 268.7);

Tailwind

colors: {
  custom: {
    50: '#5d588c',
    500: '#101c5d',
    950: '#000000',
  },
}

SCSS

$custom: #101c5d;
$custom-light: #5d588c;
$custom-dark: #000000;

JSON

{
  "hex": "#101c5d",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 93
  },
  "hsl": {
    "h": 230.649,
    "s": 70.642,
    "l": 21.373
  },
  "oklch": {
    "l": 0.26713,
    "c": 0.11615,
    "h": 268.7
  },
  "luminance": 0.01731
}

Semantic roles & 50–950 ramp

primary

#101C5D

secondary

#968733

accent

#D23AED

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101C5D

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

Preview Lab → · Contrast checker → · Palette generator →