#101B43#101B43

#101B43 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.9% C 0.077 H 268.4°. Best body text is #FFFFFF at 16.67:1 contrast (WCAG AA passes).

Color values

HEX	#101B43
RGB	rgb(16, 27, 67)
HSL	hsl(227, 61%, 16%)
HSV	hsv(227, 76%, 26%)
CMYK	cmyk(76.1%, 59.7%, 0%, 73.7%)
CIE-LAB	lab(11.27, 11.09, -26.80)
CIE-LCH	lch(11.27, 29.01, 292.48°)
OKLab	oklab(23.92% -0.0021 -0.077)
OKLCH	oklch(23.92% 0.077 268.4)
XYZ	xyz(1.6184, 1.2991, 5.4746)
Luminance	0.0130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B43 #433810

analogous

#103543 #101B43 #1F1043

triadic

#101B43 #43101B #1B4310

tetradic

#101B43 #431035 #433810 #10431F

square

#101B43 #431035 #433810 #10431F

split-complementary

#101B43 #431F10 #354310

monochromatic

#060A19 #060A19 #101B43 #1C2F74 #2843A6

Accessibility & contrast

On white

16.67

#101B43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#101B43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B43

16.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B43	#FFFFFF	#000000	##FFFFFF
##101B43	1.00	16.67	1.26	16.67
#FFFFFF	16.67	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#032044

Deuteranopia (green-blind)

#001C42

Tritanopia (blue-blind)

#00252B

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #101b43;
/* rgb */ color: rgb(16, 27, 67);
/* oklch */ color: oklch(23.9% 0.077 268.4);

Tailwind

colors: {
  custom: {
    50: '#565677',
    500: '#101b43',
    950: '#000000',
  },
}

SCSS

$custom: #101b43;
$custom-light: #565677;
$custom-dark: #000000;

JSON

{
  "hex": "#101b43",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 67
  },
  "hsl": {
    "h": 227.059,
    "s": 61.446,
    "l": 16.275
  },
  "oklch": {
    "l": 0.23919,
    "c": 0.07704,
    "h": 268.4
  },
  "luminance": 0.01299
}

Semantic roles & 50–950 ramp

primary

#101B43

secondary

#7D6D32

accent

#C243E5

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030309

muted

#78787B

Preview Lab

Preview with #101B43

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

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