#101B71#101B71

#101B71 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.8% C 0.145 H 268.3°. Best body text is #FFFFFF at 14.82:1 contrast (WCAG AA passes).

Color values

HEX	#101B71
RGB	rgb(16, 27, 113)
HSL	hsl(233, 75%, 25%)
HSV	hsv(233, 86%, 44%)
CMYK	cmyk(85.8%, 76.1%, 0%, 55.7%)
CIE-LAB	lab(15.93, 30.05, -50.12)
CIE-LCH	lch(15.93, 58.43, 300.95°)
OKLab	oklab(28.76% -0.0042 -0.1452)
OKLCH	oklch(28.76% 0.145 268.3)
XYZ	xyz(3.5852, 2.0859, 15.8332)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B71 #716610

analogous

#104B71 #101B71 #351071

triadic

#101B71 #71101B #1B7110

tetradic

#101B71 #71104B #716610 #107135

square

#101B71 #71104B #716610 #107135

split-complementary

#101B71 #713510 #4B7110

monochromatic

#04061B #080E3B #101B71 #1828A7 #1F35DC

Accessibility & contrast

On white

14.82

#101B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#101B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B71

14.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B71	#FFFFFF	#000000	##FFFFFF
##101B71	1.00	14.82	1.42	14.82
#FFFFFF	14.82	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C74

Deuteranopia (green-blind)

#00236F

Tritanopia (blue-blind)

#003444

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #101b71;
/* rgb */ color: rgb(16, 27, 113);
/* oklch */ color: oklch(28.8% 0.145 268.3);

Tailwind

colors: {
  custom: {
    50: '#63589b',
    500: '#101b71',
    950: '#000000',
  },
}

SCSS

$custom: #101b71;
$custom-light: #63589b;
$custom-dark: #000000;

JSON

{
  "hex": "#101b71",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 113
  },
  "hsl": {
    "h": 233.196,
    "s": 75.194,
    "l": 25.294
  },
  "oklch": {
    "l": 0.28764,
    "c": 0.1453,
    "h": 268.3
  },
  "luminance": 0.02086
}

Semantic roles & 50–950 ramp

primary

#101B71

secondary

#A99B34

accent

#DD36F2

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #101B71

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

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