#101D5C#101D5C

#101D5C is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.8% C 0.113 H 268.3°. Best body text is #FFFFFF at 15.53:1 contrast (WCAG AA passes).

Color values

HEX	#101D5C
RGB	rgb(16, 29, 92)
HSL	hsl(230, 70%, 21%)
HSV	hsv(230, 83%, 36%)
CMYK	cmyk(82.6%, 68.5%, 0%, 63.9%)
CIE-LAB	lab(14.18, 20.26, -39.17)
CIE-LCH	lch(14.18, 44.10, 297.34°)
OKLab	oklab(26.81% -0.0033 -0.1133)
OKLCH	oklch(26.81% 0.113 268.3)
XYZ	xyz(2.5841, 1.7613, 10.3269)
Luminance	0.0176 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D5C #5C4F10

analogous

#10435C #101D5C #29105C

triadic

#101D5C #5C101D #1D5C10

tetradic

#101D5C #5C1043 #5C4F10 #105C29

square

#101D5C #5C1043 #5C4F10 #105C29

split-complementary

#101D5C #5C2910 #435C10

monochromatic

#05081A #070D28 #101D5C #192D90 #223EC4

Accessibility & contrast

On white

15.53

#101D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#101D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D5C

15.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D5C	#FFFFFF	#000000	##FFFFFF
##101D5C	1.00	15.53	1.35	15.53
#FFFFFF	15.53	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285E

Deuteranopia (green-blind)

#00205B

Tritanopia (blue-blind)

#002E39

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #101d5c;
/* rgb */ color: rgb(16, 29, 92);
/* oklch */ color: oklch(26.8% 0.113 268.3);

Tailwind

colors: {
  custom: {
    50: '#5d588b',
    500: '#101d5c',
    950: '#000000',
  },
}

SCSS

$custom: #101d5c;
$custom-light: #5d588b;
$custom-dark: #000000;

JSON

{
  "hex": "#101d5c",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 92
  },
  "hsl": {
    "h": 229.737,
    "s": 70.37,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26811,
    "c": 0.11336,
    "h": 268.3
  },
  "luminance": 0.01762
}

Semantic roles & 50–950 ramp

primary

#101D5C

secondary

#958433

accent

#CF3BED

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101D5C

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

Preview Lab → · Contrast checker → · Palette generator →