#1B227D#1B227D

#1B227D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.9% C 0.150 H 271.0°. Best body text is #FFFFFF at 13.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B227D
RGB	rgb(27, 34, 125)
HSL	hsl(236, 64%, 30%)
HSV	hsv(236, 78%, 49%)
CMYK	cmyk(78.4%, 72.8%, 0%, 51%)
CIE-LAB	lab(19.46, 30.98, -51.98)
CIE-LCH	lch(19.46, 60.51, 300.80°)
OKLab	oklab(31.85% 0.0025 -0.1504)
OKLCH	oklch(31.85% 0.15 271)
XYZ	xyz(4.7244, 2.8572, 19.7006)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B227D #7D761B

analogous

#1B537D #1B227D #451B7D

triadic

#1B227D #7D1B22 #227D1B

tetradic

#1B227D #7D1B53 #7D761B #1B7D45

square

#1B227D #7D1B53 #7D761B #1B7D45

split-complementary

#1B227D #7D451B #537D1B

monochromatic

#050719 #10144B #1B227D #2630AF #3D48D5

Accessibility & contrast

On white

13.36

#1B227D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B227D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B227D

13.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B227D	#FFFFFF	#000000	##FFFFFF
##1B227D	1.00	13.36	1.57	13.36
#FFFFFF	13.36	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003480

Deuteranopia (green-blind)

#002A7B

Tritanopia (blue-blind)

#003B4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b227d;
/* rgb */ color: rgb(27, 34, 125);
/* oklch */ color: oklch(31.9% 0.150 271.0);

Tailwind

colors: {
  custom: {
    50: '#695da4',
    500: '#1b227d',
    950: '#000000',
  },
}

SCSS

$custom: #1b227d;
$custom-light: #695da4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b227d",
  "rgb": {
    "r": 27,
    "g": 34,
    "b": 125
  },
  "hsl": {
    "h": 235.714,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.3185,
    "c": 0.15047,
    "h": 271
  },
  "luminance": 0.02858
}

Semantic roles & 50–950 ramp

primary

#1B227D

secondary

#B1A943

accent

#DC40E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B227D

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

Preview Lab → · Contrast checker → · Palette generator →