#191B3E#191B3E

#191B3E is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.2% C 0.066 H 277.8°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#191B3E
RGB	rgb(25, 27, 62)
HSL	hsl(237, 43%, 17%)
HSV	hsv(237, 60%, 24%)
CMYK	cmyk(59.7%, 56.5%, 0%, 75.7%)
CIE-LAB	lab(11.54, 11.07, -22.81)
CIE-LCH	lch(11.54, 25.36, 295.89°)
OKLab	oklab(24.17% 0.0089 -0.065)
OKLCH	oklch(24.17% 0.066 277.8)
XYZ	xyz(1.6621, 1.3382, 4.7272)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B3E #3E3C19

analogous

#192E3E #191B3E #2A193E

triadic

#191B3E #3E191B #1B3E19

tetradic

#191B3E #3E192E #3E3C19 #193E2A

square

#191B3E #3E192E #3E3C19 #193E2A

split-complementary

#191B3E #3E2A19 #2E3E19

monochromatic

#090916 #090916 #191B3E #2B2E6A #3C4195

Accessibility & contrast

On white

16.57

#191B3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#191B3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B3E

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B3E	#FFFFFF	#000000	##FFFFFF
##191B3E	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A203F

Deuteranopia (green-blind)

#071D3D

Tritanopia (blue-blind)

#092329

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #191b3e;
/* rgb */ color: rgb(25, 27, 62);
/* oklch */ color: oklch(24.2% 0.066 277.8);

Tailwind

colors: {
  custom: {
    50: '#595773',
    500: '#191b3e',
    950: '#000000',
  },
}

SCSS

$custom: #191b3e;
$custom-light: #595773;
$custom-dark: #000000;

JSON

{
  "hex": "#191b3e",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 62
  },
  "hsl": {
    "h": 236.757,
    "s": 42.529,
    "l": 17.059
  },
  "oklch": {
    "l": 0.24172,
    "c": 0.06562,
    "h": 277.8
  },
  "luminance": 0.01338
}

Semantic roles & 50–950 ramp

primary

#191B3E

secondary

#74713F

accent

#CC55D2

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040308

muted

#79787B

Preview Lab

Preview with #191B3E

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

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