#101E5B#101E5B

#101E5B is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.111 H 267.9°. Best body text is #FFFFFF at 15.45:1 contrast (WCAG AA passes).

Color values

HEX	#101E5B
RGB	rgb(16, 30, 91)
HSL	hsl(229, 70%, 21%)
HSV	hsv(229, 82%, 36%)
CMYK	cmyk(82.4%, 67%, 0%, 64.3%)
CIE-LAB	lab(14.37, 19.10, -38.20)
CIE-LCH	lch(14.37, 42.71, 296.57°)
OKLab	oklab(26.92% -0.004 -0.1104)
OKLCH	oklch(26.92% 0.111 267.9)
XYZ	xyz(2.5656, 1.7938, 10.1065)
Luminance	0.0179 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101E5B #5B4D10

analogous

#10435B #101E5B #27105B

triadic

#101E5B #5B101E #1E5B10

tetradic

#101E5B #5B1043 #5B4D10 #105B27

square

#101E5B #5B1043 #5B4D10 #105B27

split-complementary

#101E5B #5B2710 #435B10

monochromatic

#05091A #070D27 #101E5B #192F8F #2240C3

Accessibility & contrast

On white

15.45

#101E5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#101E5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101E5B

15.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101E5B	#FFFFFF	#000000	##FFFFFF
##101E5B	1.00	15.45	1.36	15.45
#FFFFFF	15.45	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285D

Deuteranopia (green-blind)

#00215A

Tritanopia (blue-blind)

#002E39

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #101e5b;
/* rgb */ color: rgb(16, 30, 91);
/* oklch */ color: oklch(26.9% 0.111 267.9);

Tailwind

colors: {
  custom: {
    50: '#5c598a',
    500: '#101e5b',
    950: '#000000',
  },
}

SCSS

$custom: #101e5b;
$custom-light: #5c598a;
$custom-dark: #000000;

JSON

{
  "hex": "#101e5b",
  "rgb": {
    "r": 16,
    "g": 30,
    "b": 91
  },
  "hsl": {
    "h": 228.8,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.26916,
    "c": 0.11052,
    "h": 267.9
  },
  "luminance": 0.01794
}

Semantic roles & 50–950 ramp

primary

#101E5B

secondary

#948233

accent

#CC3BED

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101E5B

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

Preview Lab → · Contrast checker → · Palette generator →