#1B2B68#1B2B68

#1B2B68 is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.6% C 0.109 H 268.4°. Best body text is #FFFFFF at 13.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B68
RGB	rgb(27, 43, 104)
HSL	hsl(228, 59%, 26%)
HSV	hsv(228, 74%, 41%)
CMYK	cmyk(74%, 58.7%, 0%, 59.2%)
CIE-LAB	lab(19.88, 16.51, -37.77)
CIE-LCH	lch(19.88, 41.22, 293.61°)
OKLab	oklab(31.55% -0.0031 -0.1088)
OKLCH	oklch(31.55% 0.109 268.4)
XYZ	xyz(3.8137, 2.9599, 13.4643)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B68 #68581B

analogous

#1B5168 #1B2B68 #311B68

triadic

#1B2B68 #681B2B #2B681B

tetradic

#1B2B68 #681B51 #68581B #1B6831

square

#1B2B68 #681B51 #68581B #1B6831

split-complementary

#1B2B68 #68311B #51681B

monochromatic

#060A18 #0E1737 #1B2B68 #283F99 #3453C9

Accessibility & contrast

On white

13.19

#1B2B68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1B2B68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B68

13.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B68	#FFFFFF	#000000	##FFFFFF
##1B2B68	1.00	13.19	1.59	13.19
#FFFFFF	13.19	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00346A

Deuteranopia (green-blind)

#002D67

Tritanopia (blue-blind)

#003A45

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b2b68;
/* rgb */ color: rgb(27, 43, 104);
/* oklch */ color: oklch(31.6% 0.109 268.4);

Tailwind

colors: {
  custom: {
    50: '#636494',
    500: '#1b2b68',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b68;
$custom-light: #636494;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b68",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 104
  },
  "hsl": {
    "h": 227.532,
    "s": 58.779,
    "l": 25.686
  },
  "oklch": {
    "l": 0.31552,
    "c": 0.1088,
    "h": 268.4
  },
  "luminance": 0.0296
}

Semantic roles & 50–950 ramp

primary

#1B2B68

secondary

#9D8A42

accent

#C246E2

background

#F6F5F9

surface

#EBEAF1

border

#C6C6CB

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1B2B68

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

Preview Lab → · Contrast checker → · Palette generator →