#101F5F#101F5F

#101F5F is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.5% C 0.115 H 267.6°. Best body text is #FFFFFF at 15.18:1 contrast (WCAG AA passes).

Color values

HEX	#101F5F
RGB	rgb(16, 31, 95)
HSL	hsl(229, 71%, 22%)
HSV	hsv(229, 83%, 37%)
CMYK	cmyk(83.2%, 67.4%, 0%, 62.7%)
CIE-LAB	lab(15.04, 20.05, -39.77)
CIE-LCH	lch(15.04, 44.53, 296.75°)
OKLab	oklab(27.54% -0.0048 -0.115)
OKLCH	oklch(27.54% 0.115 267.6)
XYZ	xyz(2.7685, 1.9160, 11.0482)
Luminance	0.0192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F5F #5F5010

analogous

#10475F #101F5F #29105F

triadic

#101F5F #5F101F #1F5F10

tetradic

#101F5F #5F1047 #5F5010 #105F29

square

#101F5F #5F1047 #5F5010 #105F29

split-complementary

#101F5F #5F2910 #475F10

monochromatic

#04091A #070E2B #101F5F #193093 #2241C8

Accessibility & contrast

On white

15.18

#101F5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#101F5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F5F

15.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F5F	#FFFFFF	#000000	##FFFFFF
##101F5F	1.00	15.18	1.38	15.18
#FFFFFF	15.18	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A61

Deuteranopia (green-blind)

#00225E

Tritanopia (blue-blind)

#00303B

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #101f5f;
/* rgb */ color: rgb(16, 31, 95);
/* oklch */ color: oklch(27.5% 0.115 267.6);

Tailwind

colors: {
  custom: {
    50: '#5d5a8d',
    500: '#101f5f',
    950: '#000000',
  },
}

SCSS

$custom: #101f5f;
$custom-light: #5d5a8d;
$custom-dark: #000000;

JSON

{
  "hex": "#101f5f",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 95
  },
  "hsl": {
    "h": 228.608,
    "s": 71.171,
    "l": 21.765
  },
  "oklch": {
    "l": 0.27536,
    "c": 0.11513,
    "h": 267.6
  },
  "luminance": 0.01916
}

Semantic roles & 50–950 ramp

primary

#101F5F

secondary

#988533

accent

#CC3AEE

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101F5F

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

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