#1B2B5F#1B2B5F

#1B2B5F is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.8% C 0.095 H 267.7°. Best body text is #FFFFFF at 13.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B5F
RGB	rgb(27, 43, 95)
HSL	hsl(226, 56%, 24%)
HSV	hsv(226, 72%, 37%)
CMYK	cmyk(71.6%, 54.7%, 0%, 62.7%)
CIE-LAB	lab(19.17, 12.85, -33.03)
CIE-LCH	lch(19.17, 35.44, 291.25°)
OKLab	oklab(30.79% -0.0039 -0.0948)
OKLCH	oklch(30.79% 0.095 267.7)
XYZ	xyz(3.3807, 2.7867, 11.1840)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B5F #5F4F1B

analogous

#1B4D5F #1B2B5F #2D1B5F

triadic

#1B2B5F #5F1B2B #2B5F1B

tetradic

#1B2B5F #5F1B4D #5F4F1B #1B5F2D

square

#1B2B5F #5F1B4D #5F4F1B #1B5F2D

split-complementary

#1B2B5F #5F2D1B #4D5F1B

monochromatic

#070B18 #0D152F #1B2B5F #29418F #3656BE

Accessibility & contrast

On white

13.48

#1B2B5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B2B5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B5F

13.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B5F	#FFFFFF	#000000	##FFFFFF
##1B2B5F	1.00	13.48	1.56	13.48
#FFFFFF	13.48	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C3261

Deuteranopia (green-blind)

#002C5E

Tritanopia (blue-blind)

#003740

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b2b5f;
/* rgb */ color: rgb(27, 43, 95);
/* oklch */ color: oklch(30.8% 0.095 267.7);

Tailwind

colors: {
  custom: {
    50: '#60638d',
    500: '#1b2b5f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b5f;
$custom-light: #60638d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b5f",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 95
  },
  "hsl": {
    "h": 225.882,
    "s": 55.738,
    "l": 23.922
  },
  "oklch": {
    "l": 0.30787,
    "c": 0.09488,
    "h": 267.7
  },
  "luminance": 0.02787
}

Semantic roles & 50–950 ramp

primary

#1B2B5F

secondary

#958141

accent

#BC49DF

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050C

muted

#7A797D

Preview Lab

Preview with #1B2B5F

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

Preview Lab → · Contrast checker → · Palette generator →