#101B5E#101B5E

#101B5E is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.119 H 269.0°. Best body text is #FFFFFF at 15.67:1 contrast (WCAG AA passes).

Color values

HEX	#101B5E
RGB	rgb(16, 27, 94)
HSL	hsl(232, 71%, 22%)
HSV	hsv(232, 83%, 37%)
CMYK	cmyk(83%, 71.3%, 0%, 63.1%)
CIE-LAB	lab(13.84, 22.53, -41.07)
CIE-LCH	lch(13.84, 46.84, 298.75°)
OKLab	oklab(26.62% -0.0022 -0.1189)
OKLCH	oklch(26.62% 0.119 269)
XYZ	xyz(2.6253, 1.7019, 10.7776)
Luminance	0.0170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B5E #5E5310

analogous

#10425E #101B5E #2C105E

triadic

#101B5E #5E101B #1B5E10

tetradic

#101B5E #5E1042 #5E5310 #105E2C

square

#101B5E #5E1042 #5E5310 #105E2C

split-complementary

#101B5E #5E2C10 #425E10

monochromatic

#04081A #070C2A #101B5E #192A92 #2239C7

Accessibility & contrast

On white

15.67

#101B5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#101B5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B5E

15.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B5E	#FFFFFF	#000000	##FFFFFF
##101B5E	1.00	15.67	1.34	15.67
#FFFFFF	15.67	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002760

Deuteranopia (green-blind)

#00205D

Tritanopia (blue-blind)

#002D3A

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101b5e;
/* rgb */ color: rgb(16, 27, 94);
/* oklch */ color: oklch(26.6% 0.119 269.0);

Tailwind

colors: {
  custom: {
    50: '#5d578c',
    500: '#101b5e',
    950: '#000000',
  },
}

SCSS

$custom: #101b5e;
$custom-light: #5d578c;
$custom-dark: #000000;

JSON

{
  "hex": "#101b5e",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 94
  },
  "hsl": {
    "h": 231.538,
    "s": 70.909,
    "l": 21.569
  },
  "oklch": {
    "l": 0.26622,
    "c": 0.1189,
    "h": 269
  },
  "luminance": 0.01702
}

Semantic roles & 50–950 ramp

primary

#101B5E

secondary

#978933

accent

#D43AEE

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101B5E

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

Preview Lab → · Contrast checker → · Palette generator →