#1B2B7D#1B2B7D

#1B2B7D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.5% C 0.140 H 268.8°. Best body text is #FFFFFF at 12.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B7D
RGB	rgb(27, 43, 125)
HSL	hsl(230, 64%, 30%)
HSV	hsv(230, 78%, 49%)
CMYK	cmyk(78.4%, 65.6%, 0%, 51%)
CIE-LAB	lab(21.73, 24.92, -48.25)
CIE-LCH	lch(21.73, 54.31, 297.32°)
OKLab	oklab(33.5% -0.0029 -0.1395)
OKLCH	oklch(33.5% 0.14 268.8)
XYZ	xyz(5.0163, 3.4409, 19.7978)
Luminance	0.0344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B7D #7D6D1B

analogous

#1B5C7D #1B2B7D #3C1B7D

triadic

#1B2B7D #7D1B2B #2B7D1B

tetradic

#1B2B7D #7D1B5C #7D6D1B #1B7D3C

square

#1B2B7D #7D1B5C #7D6D1B #1B7D3C

split-complementary

#1B2B7D #7D3C1B #5C7D1B

monochromatic

#050919 #101A4B #1B2B7D #263CAF #3D56D5

Accessibility & contrast

On white

12.44

#1B2B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1B2B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B7D

12.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B7D	#FFFFFF	#000000	##FFFFFF
##1B2B7D	1.00	12.44	1.69	12.44
#FFFFFF	12.44	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003980

Deuteranopia (green-blind)

#00307B

Tritanopia (blue-blind)

#00404F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2b7d;
/* rgb */ color: rgb(27, 43, 125);
/* oklch */ color: oklch(33.5% 0.140 268.8);

Tailwind

colors: {
  custom: {
    50: '#6864a3',
    500: '#1b2b7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b7d;
$custom-light: #6864a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b7d",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 125
  },
  "hsl": {
    "h": 230.204,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.33502,
    "c": 0.13956,
    "h": 268.8
  },
  "luminance": 0.03441
}

Semantic roles & 50–950 ramp

primary

#1B2B7D

secondary

#B19F43

accent

#CC40E7

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1B2B7D

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

Preview Lab → · Contrast checker → · Palette generator →