#191B5E#191B5E

#191B5E is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.2% C 0.116 H 274.2°. Best body text is #FFFFFF at 15.44:1 contrast (WCAG AA passes).

Color values

HEX	#191B5E
RGB	rgb(25, 27, 94)
HSL	hsl(238, 58%, 23%)
HSV	hsv(238, 73%, 37%)
CMYK	cmyk(73.4%, 71.3%, 0%, 63.1%)
CIE-LAB	lab(14.39, 23.65, -40.14)
CIE-LCH	lch(14.39, 46.59, 300.51°)
OKLab	oklab(27.17% 0.0085 -0.1159)
OKLCH	oklch(27.17% 0.116 274.2)
XYZ	xyz(2.8125, 1.7984, 10.7864)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B5E #5E5C19

analogous

#193D5E #191B5E #39195E

triadic

#191B5E #5E191B #1B5E19

tetradic

#191B5E #5E193D #5E5C19 #195E39

square

#191B5E #5E193D #5E5C19 #195E39

split-complementary

#191B5E #5E3919 #3D5E19

monochromatic

#060718 #0C0D2E #191B5E #26298E #3337BF

Accessibility & contrast

On white

15.44

#191B5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#191B5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B5E

15.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B5E	#FFFFFF	#000000	##FFFFFF
##191B5E	1.00	15.44	1.36	15.44
#FFFFFF	15.44	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002860

Deuteranopia (green-blind)

#00215D

Tritanopia (blue-blind)

#002D3A

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #191b5e;
/* rgb */ color: rgb(25, 27, 94);
/* oklch */ color: oklch(27.2% 0.116 274.2);

Tailwind

colors: {
  custom: {
    50: '#61578c',
    500: '#191b5e',
    950: '#000000',
  },
}

SCSS

$custom: #191b5e;
$custom-light: #61578c;
$custom-dark: #000000;

JSON

{
  "hex": "#191b5e",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 94
  },
  "hsl": {
    "h": 238.261,
    "s": 57.983,
    "l": 23.333
  },
  "oklch": {
    "l": 0.27174,
    "c": 0.11624,
    "h": 274.2
  },
  "luminance": 0.01799
}

Semantic roles & 50–950 ramp

primary

#191B5E

secondary

#94923F

accent

#DD47E1

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #191B5E

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

Preview Lab → · Contrast checker → · Palette generator →