#101C5C#101C5C

#101C5C is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.115 H 268.7°. Best body text is #FFFFFF at 15.64:1 contrast (WCAG AA passes).

Color values

HEX	#101C5C
RGB	rgb(16, 28, 92)
HSL	hsl(231, 70%, 21%)
HSV	hsv(231, 83%, 36%)
CMYK	cmyk(82.6%, 69.6%, 0%, 63.9%)
CIE-LAB	lab(13.90, 20.98, -39.63)
CIE-LCH	lch(13.90, 44.84, 297.90°)
OKLab	oklab(26.61% -0.0027 -0.1146)
OKLCH	oklch(26.61% 0.115 268.7)
XYZ	xyz(2.5600, 1.7131, 10.3189)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C5C #5C5010

analogous

#10425C #101C5C #2A105C

triadic

#101C5C #5C101C #1C5C10

tetradic

#101C5C #5C1042 #5C5010 #105C2A

square

#101C5C #5C1042 #5C5010 #105C2A

split-complementary

#101C5C #5C2A10 #425C10

monochromatic

#05081A #070C28 #101C5C #192C90 #223CC4

Accessibility & contrast

On white

15.64

#101C5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#101C5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C5C

15.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C5C	#FFFFFF	#000000	##FFFFFF
##101C5C	1.00	15.64	1.34	15.64
#FFFFFF	15.64	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275E

Deuteranopia (green-blind)

#00205B

Tritanopia (blue-blind)

#002D39

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101c5c;
/* rgb */ color: rgb(16, 28, 92);
/* oklch */ color: oklch(26.6% 0.115 268.7);

Tailwind

colors: {
  custom: {
    50: '#5d588b',
    500: '#101c5c',
    950: '#000000',
  },
}

SCSS

$custom: #101c5c;
$custom-light: #5d588b;
$custom-dark: #000000;

JSON

{
  "hex": "#101c5c",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 92
  },
  "hsl": {
    "h": 230.526,
    "s": 70.37,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26607,
    "c": 0.11468,
    "h": 268.7
  },
  "luminance": 0.01713
}

Semantic roles & 50–950 ramp

primary

#101C5C

secondary

#958633

accent

#D13BED

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101C5C

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

Preview Lab → · Contrast checker → · Palette generator →