#1B2B7F#1B2B7F

#1B2B7F is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.7% C 0.142 H 268.8°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B7F
RGB	rgb(27, 43, 127)
HSL	hsl(230, 65%, 30%)
HSV	hsv(230, 79%, 50%)
CMYK	cmyk(78.7%, 66.1%, 0%, 50.2%)
CIE-LAB	lab(21.92, 25.71, -49.21)
CIE-LCH	lch(21.92, 55.52, 297.58°)
OKLab	oklab(33.7% -0.003 -0.1423)
OKLCH	oklch(33.7% 0.142 268.8)
XYZ	xyz(5.1453, 3.4925, 20.4775)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B7F #7F6F1B

analogous

#1B5D7F #1B2B7F #3D1B7F

triadic

#1B2B7F #7F1B2B #2B7F1B

tetradic

#1B2B7F #7F1B5D #7F6F1B #1B7F3D

square

#1B2B7F #7F1B5D #7F6F1B #1B7F3D

split-complementary

#1B2B7F #7F3D1B #5D7F1B

monochromatic

#06091A #101A4D #1B2B7F #263CB1 #3E57D6

Accessibility & contrast

On white

12.36

#1B2B7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B2B7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B7F

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B7F	#FFFFFF	#000000	##FFFFFF
##1B2B7F	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003982

Deuteranopia (green-blind)

#00307D

Tritanopia (blue-blind)

#004151

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2b7f;
/* rgb */ color: rgb(27, 43, 127);
/* oklch */ color: oklch(33.7% 0.142 268.8);

Tailwind

colors: {
  custom: {
    50: '#6964a5',
    500: '#1b2b7f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b7f;
$custom-light: #6964a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b7f",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 127
  },
  "hsl": {
    "h": 230.4,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.33698,
    "c": 0.14236,
    "h": 268.8
  },
  "luminance": 0.03493
}

Semantic roles & 50–950 ramp

primary

#1B2B7F

secondary

#B3A143

accent

#CD40E8

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1B2B7F

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

Preview Lab → · Contrast checker → · Palette generator →