#101B5F#101B5F

#101B5F is a dark, vivid blue. Relative luminance 0.017; OKLCH L 26.7% C 0.120 H 268.9°. Best body text is #FFFFFF at 15.62:1 contrast (WCAG AA passes).

Color values

HEX	#101B5F
RGB	rgb(16, 27, 95)
HSL	hsl(232, 71%, 22%)
HSV	hsv(232, 83%, 37%)
CMYK	cmyk(83.2%, 71.6%, 0%, 62.7%)
CIE-LAB	lab(13.94, 22.94, -41.57)
CIE-LCH	lch(13.94, 47.48, 298.89°)
OKLab	oklab(26.73% -0.0022 -0.1203)
OKLCH	oklch(26.73% 0.12 268.9)
XYZ	xyz(2.6705, 1.7199, 11.0155)
Luminance	0.0172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B5F #5F5410

analogous

#10435F #101B5F #2D105F

triadic

#101B5F #5F101B #1B5F10

tetradic

#101B5F #5F1043 #5F5410 #105F2D

square

#101B5F #5F1043 #5F5410 #105F2D

split-complementary

#101B5F #5F2D10 #435F10

monochromatic

#04071A #070C2B #101B5F #192A93 #2239C8

Accessibility & contrast

On white

15.62

#101B5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#101B5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B5F

15.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B5F	#FFFFFF	#000000	##FFFFFF
##101B5F	1.00	15.62	1.34	15.62
#FFFFFF	15.62	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002761

Deuteranopia (green-blind)

#00205E

Tritanopia (blue-blind)

#002D3A

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101b5f;
/* rgb */ color: rgb(16, 27, 95);
/* oklch */ color: oklch(26.7% 0.120 268.9);

Tailwind

colors: {
  custom: {
    50: '#5e578d',
    500: '#101b5f',
    950: '#000000',
  },
}

SCSS

$custom: #101b5f;
$custom-light: #5e578d;
$custom-dark: #000000;

JSON

{
  "hex": "#101b5f",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 95
  },
  "hsl": {
    "h": 231.646,
    "s": 71.171,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26731,
    "c": 0.12035,
    "h": 268.9
  },
  "luminance": 0.0172
}

Semantic roles & 50–950 ramp

primary

#101B5F

secondary

#988A33

accent

#D53AEE

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101B5F

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

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