#101F3E#101F3E

#101F3E is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.5% C 0.063 H 263.1°. Best body text is #FFFFFF at 16.31:1 contrast (WCAG AA passes).

Color values

HEX	#101F3E
RGB	rgb(16, 31, 62)
HSL	hsl(220, 59%, 15%)
HSV	hsv(220, 74%, 24%)
CMYK	cmyk(74.2%, 50%, 0%, 75.7%)
CIE-LAB	lab(12.21, 5.83, -21.78)
CIE-LCH	lch(12.21, 22.55, 285.00°)
OKLab	oklab(24.51% -0.0075 -0.0622)
OKLCH	oklch(24.51% 0.063 263.1)
XYZ	xyz(1.5729, 1.4378, 4.7511)
Luminance	0.0144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F3E #3E2F10

analogous

#10363E #101F3E #18103E

triadic

#101F3E #3E101F #1F3E10

tetradic

#101F3E #3E1036 #3E2F10 #103E18

square

#101F3E #3E1036 #3E2F10 #103E18

split-complementary

#101F3E #3E1810 #363E10

monochromatic

#060C18 #060C18 #101F3E #1D376F #29509F

Accessibility & contrast

On white

16.31

#101F3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#101F3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F3E

16.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F3E	#FFFFFF	#000000	##FFFFFF
##101F3E	1.00	16.31	1.29	16.31
#FFFFFF	16.31	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10223F

Deuteranopia (green-blind)

#091E3D

Tritanopia (blue-blind)

#00262B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #101f3e;
/* rgb */ color: rgb(16, 31, 62);
/* oklch */ color: oklch(24.5% 0.063 263.1);

Tailwind

colors: {
  custom: {
    50: '#545a73',
    500: '#101f3e',
    950: '#000000',
  },
}

SCSS

$custom: #101f3e;
$custom-light: #545a73;
$custom-dark: #000000;

JSON

{
  "hex": "#101f3e",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 62
  },
  "hsl": {
    "h": 220.435,
    "s": 58.974,
    "l": 15.294
  },
  "oklch": {
    "l": 0.2451,
    "c": 0.06262,
    "h": 263.1
  },
  "luminance": 0.01438
}

Semantic roles & 50–950 ramp

primary

#101F3E

secondary

#786132

accent

#AF46E2

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101F3E

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

Preview Lab → · Contrast checker → · Palette generator →