#1B2E57#1B2E57

#1B2E57 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 30.9% C 0.078 H 263.7°. Best body text is #FFFFFF at 13.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E57
RGB	rgb(27, 46, 87)
HSL	hsl(221, 53%, 22%)
HSV	hsv(221, 69%, 34%)
CMYK	cmyk(69%, 47.1%, 0%, 65.9%)
CIE-LAB	lab(19.54, 7.41, -27.14)
CIE-LCH	lch(19.54, 28.13, 285.28°)
OKLab	oklab(30.88% -0.0085 -0.0774)
OKLCH	oklch(30.88% 0.078 263.7)
XYZ	xyz(3.1487, 2.8748, 9.4039)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E57 #57441B

analogous

#1B4C57 #1B2E57 #261B57

triadic

#1B2E57 #571B2E #2E571B

tetradic

#1B2E57 #571B4C #57441B #1B5726

square

#1B2E57 #571B4C #57441B #1B5726

split-complementary

#1B2E57 #57261B #4C571B

monochromatic

#070C17 #0D1528 #1B2E57 #294786 #385FB4

Accessibility & contrast

On white

13.33

#1B2E57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1B2E57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E57

13.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E57	#FFFFFF	#000000	##FFFFFF
##1B2E57	1.00	13.33	1.58	13.33
#FFFFFF	13.33	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3259

Deuteranopia (green-blind)

#112D56

Tritanopia (blue-blind)

#00373E

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2e57;
/* rgb */ color: rgb(27, 46, 87);
/* oklch */ color: oklch(30.9% 0.078 263.7);

Tailwind

colors: {
  custom: {
    50: '#5e6687',
    500: '#1b2e57',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e57;
$custom-light: #5e6687;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e57",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 87
  },
  "hsl": {
    "h": 221,
    "s": 52.632,
    "l": 22.353
  },
  "oklch": {
    "l": 0.30882,
    "c": 0.07788,
    "h": 263.7
  },
  "luminance": 0.02875
}

Semantic roles & 50–950 ramp

primary

#1B2E57

secondary

#8D7541

accent

#AE4CDC

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05050B

muted

#797A7C

Preview Lab

Preview with #1B2E57

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

Preview Lab → · Contrast checker → · Palette generator →