#101D51#101D51

#101D51 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.7% C 0.097 H 268.1°. Best body text is #FFFFFF at 15.95:1 contrast (WCAG AA passes).

Color values

HEX	#101D51
RGB	rgb(16, 29, 81)
HSL	hsl(228, 67%, 19%)
HSV	hsv(228, 80%, 32%)
CMYK	cmyk(80.2%, 64.2%, 0%, 68.2%)
CIE-LAB	lab(13.12, 15.60, -33.47)
CIE-LCH	lch(13.12, 36.93, 294.99°)
OKLab	oklab(25.7% -0.0032 -0.0966)
OKLCH	oklch(25.7% 0.097 268.1)
XYZ	xyz(2.1377, 1.5827, 7.9758)
Luminance	0.0158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D51 #514410

analogous

#103E51 #101D51 #241051

triadic

#101D51 #51101D #1D5110

tetradic

#101D51 #51103E #514410 #105124

square

#101D51 #51103E #514410 #105124

split-complementary

#101D51 #512410 #3E5110

monochromatic

#05091A #060B1E #101D51 #1A2F84 #2442B7

Accessibility & contrast

On white

15.95

#101D51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#101D51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D51

15.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D51	#FFFFFF	#000000	##FFFFFF
##101D51	1.00	15.95	1.32	15.95
#FFFFFF	15.95	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002553

Deuteranopia (green-blind)

#001F50

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #101d51;
/* rgb */ color: rgb(16, 29, 81);
/* oklch */ color: oklch(25.7% 0.097 268.1);

Tailwind

colors: {
  custom: {
    50: '#595882',
    500: '#101d51',
    950: '#000000',
  },
}

SCSS

$custom: #101d51;
$custom-light: #595882;
$custom-dark: #000000;

JSON

{
  "hex": "#101d51",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 81
  },
  "hsl": {
    "h": 228,
    "s": 67.01,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25701,
    "c": 0.09663,
    "h": 268.1
  },
  "luminance": 0.01583
}

Semantic roles & 50–950 ramp

primary

#101D51

secondary

#8B7932

accent

#C83EEA

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #101D51

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

Preview Lab → · Contrast checker → · Palette generator →