#1B2175#1B2175

#1B2175 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.8% C 0.141 H 271.7°. Best body text is #FFFFFF at 13.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B2175
RGB	rgb(27, 33, 117)
HSL	hsl(236, 63%, 28%)
HSV	hsv(236, 77%, 46%)
CMYK	cmyk(76.9%, 71.8%, 0%, 54.1%)
CIE-LAB	lab(18.39, 28.64, -48.64)
CIE-LCH	lch(18.39, 56.44, 300.49°)
OKLab	oklab(30.82% 0.0041 -0.1407)
OKLCH	oklch(30.82% 0.141 271.7)
XYZ	xyz(4.2057, 2.6046, 17.1073)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2175 #756F1B

analogous

#1B4E75 #1B2175 #421B75

triadic

#1B2175 #751B21 #21751B

tetradic

#1B2175 #751B4E #756F1B #1B7542

square

#1B2175 #751B4E #756F1B #1B7542

split-complementary

#1B2175 #75421B #4E751B

monochromatic

#060719 #101343 #1B2175 #262FA7 #3943D1

Accessibility & contrast

On white

13.81

#1B2175 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1B2175 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2175

13.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2175	#FFFFFF	#000000	##FFFFFF
##1B2175	1.00	13.81	1.52	13.81
#FFFFFF	13.81	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003178

Deuteranopia (green-blind)

#002973

Tritanopia (blue-blind)

#003848

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b2175;
/* rgb */ color: rgb(27, 33, 117);
/* oklch */ color: oklch(30.8% 0.141 271.7);

Tailwind

colors: {
  custom: {
    50: '#675c9e',
    500: '#1b2175',
    950: '#000000',
  },
}

SCSS

$custom: #1b2175;
$custom-light: #675c9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2175",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 117
  },
  "hsl": {
    "h": 236,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.3082,
    "c": 0.14076,
    "h": 271.7
  },
  "luminance": 0.02605
}

Semantic roles & 50–950 ramp

primary

#1B2175

secondary

#A9A342

accent

#DB42E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2175

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

Preview Lab → · Contrast checker → · Palette generator →