#1B227F#1B227F

#1B227F is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.1% C 0.153 H 270.8°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#1B227F
RGB	rgb(27, 34, 127)
HSL	hsl(236, 65%, 30%)
HSV	hsv(236, 79%, 50%)
CMYK	cmyk(78.7%, 73.2%, 0%, 50.2%)
CIE-LAB	lab(19.67, 31.73, -52.90)
CIE-LCH	lch(19.67, 61.68, 300.96°)
OKLab	oklab(32.07% 0.0023 -0.1531)
OKLCH	oklch(32.07% 0.153 270.8)
XYZ	xyz(4.8535, 2.9088, 20.3802)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B227F #7F781B

analogous

#1B547F #1B227F #461B7F

triadic

#1B227F #7F1B22 #227F1B

tetradic

#1B227F #7F1B54 #7F781B #1B7F46

square

#1B227F #7F1B54 #7F781B #1B7F46

split-complementary

#1B227F #7F461B #547F1B

monochromatic

#06071A #10144D #1B227F #2630B1 #3E49D6

Accessibility & contrast

On white

13.28

#1B227F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1B227F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B227F

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B227F	#FFFFFF	#000000	##FFFFFF
##1B227F	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003482

Deuteranopia (green-blind)

#002B7D

Tritanopia (blue-blind)

#003C4E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b227f;
/* rgb */ color: rgb(27, 34, 127);
/* oklch */ color: oklch(32.1% 0.153 270.8);

Tailwind

colors: {
  custom: {
    50: '#6a5da5',
    500: '#1b227f',
    950: '#000000',
  },
}

SCSS

$custom: #1b227f;
$custom-light: #6a5da5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b227f",
  "rgb": {
    "r": 27,
    "g": 34,
    "b": 127
  },
  "hsl": {
    "h": 235.8,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.32067,
    "c": 0.15315,
    "h": 270.8
  },
  "luminance": 0.02909
}

Semantic roles & 50–950 ramp

primary

#1B227F

secondary

#B3AB43

accent

#DC40E8

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B227F

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

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