#101D5A#101D5A

#101D5A is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.110 H 268.3°. Best body text is #FFFFFF at 15.61:1 contrast (WCAG AA passes).

Color values

HEX	#101D5A
RGB	rgb(16, 29, 90)
HSL	hsl(229, 70%, 21%)
HSV	hsv(229, 82%, 35%)
CMYK	cmyk(82.2%, 67.8%, 0%, 64.7%)
CIE-LAB	lab(13.98, 19.42, -38.16)
CIE-LCH	lch(13.98, 42.81, 296.97°)
OKLab	oklab(26.6% -0.0033 -0.1103)
OKLCH	oklch(26.6% 0.11 268.3)
XYZ	xyz(2.4979, 1.7268, 9.8725)
Luminance	0.0173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D5A #5A4D10

analogous

#10425A #101D5A #28105A

triadic

#101D5A #5A101D #1D5A10

tetradic

#101D5A #5A1042 #5A4D10 #105A28

square

#101D5A #5A1042 #5A4D10 #105A28

split-complementary

#101D5A #5A2810 #425A10

monochromatic

#05081A #070C26 #101D5A #192E8E #223EC2

Accessibility & contrast

On white

15.61

#101D5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#101D5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D5A

15.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D5A	#FFFFFF	#000000	##FFFFFF
##101D5A	1.00	15.61	1.35	15.61
#FFFFFF	15.61	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275C

Deuteranopia (green-blind)

#002059

Tritanopia (blue-blind)

#002D38

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #101d5a;
/* rgb */ color: rgb(16, 29, 90);
/* oklch */ color: oklch(26.6% 0.110 268.3);

Tailwind

colors: {
  custom: {
    50: '#5c5889',
    500: '#101d5a',
    950: '#000000',
  },
}

SCSS

$custom: #101d5a;
$custom-light: #5c5889;
$custom-dark: #000000;

JSON

{
  "hex": "#101d5a",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 90
  },
  "hsl": {
    "h": 229.459,
    "s": 69.811,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26604,
    "c": 0.11038,
    "h": 268.3
  },
  "luminance": 0.01727
}

Semantic roles & 50–950 ramp

primary

#101D5A

secondary

#938233

accent

#CD3BED

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101D5A

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

Preview Lab → · Contrast checker → · Palette generator →