#101D5F#101D5F

#101D5F is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.1% C 0.118 H 268.3°. Best body text is #FFFFFF at 15.41:1 contrast (WCAG AA passes).

Color values

HEX	#101D5F
RGB	rgb(16, 29, 95)
HSL	hsl(230, 71%, 22%)
HSV	hsv(230, 83%, 37%)
CMYK	cmyk(83.2%, 69.5%, 0%, 62.7%)
CIE-LAB	lab(14.48, 21.50, -40.68)
CIE-LCH	lch(14.48, 46.01, 297.86°)
OKLab	oklab(27.13% -0.0035 -0.1177)
OKLCH	oklch(27.13% 0.118 268.3)
XYZ	xyz(2.7179, 1.8148, 11.0313)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D5F #5F5210

analogous

#10455F #101D5F #2B105F

triadic

#101D5F #5F101D #1D5F10

tetradic

#101D5F #5F1045 #5F5210 #105F2B

square

#101D5F #5F1045 #5F5210 #105F2B

split-complementary

#101D5F #5F2B10 #455F10

monochromatic

#04081A #070D2B #101D5F #192D93 #223DC8

Accessibility & contrast

On white

15.41

#101D5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#101D5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D5F

15.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D5F	#FFFFFF	#000000	##FFFFFF
##101D5F	1.00	15.41	1.36	15.41
#FFFFFF	15.41	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002861

Deuteranopia (green-blind)

#00215E

Tritanopia (blue-blind)

#002F3B

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #101d5f;
/* rgb */ color: rgb(16, 29, 95);
/* oklch */ color: oklch(27.1% 0.118 268.3);

Tailwind

colors: {
  custom: {
    50: '#5e588d',
    500: '#101d5f',
    950: '#000000',
  },
}

SCSS

$custom: #101d5f;
$custom-light: #5e588d;
$custom-dark: #000000;

JSON

{
  "hex": "#101d5f",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 95
  },
  "hsl": {
    "h": 230.127,
    "s": 71.171,
    "l": 21.765
  },
  "oklch": {
    "l": 0.27126,
    "c": 0.11777,
    "h": 268.3
  },
  "luminance": 0.01815
}

Semantic roles & 50–950 ramp

primary

#101D5F

secondary

#988733

accent

#D03AEE

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101D5F

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

Preview Lab → · Contrast checker → · Palette generator →