#1B136F#1B136F

#1B136F is a dark, vivid blue. Relative luminance 0.018; OKLCH L 28.0% C 0.148 H 274.9°. Best body text is #FFFFFF at 15.34:1 contrast (WCAG AA passes).

Color values

HEX	#1B136F
RGB	rgb(27, 19, 111)
HSL	hsl(245, 71%, 25%)
HSV	hsv(245, 83%, 44%)
CMYK	cmyk(75.7%, 82.9%, 0%, 56.5%)
CIE-LAB	lab(14.66, 35.04, -50.90)
CIE-LCH	lch(14.66, 61.80, 304.54°)
OKLab	oklab(27.97% 0.0127 -0.1472)
OKLCH	oklch(27.97% 0.148 274.9)
XYZ	xyz(3.5532, 1.8461, 15.2049)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B136F #676F13

analogous

#13396F #1B136F #49136F

triadic

#1B136F #6F1B13 #136F1B

tetradic

#1B136F #6F1339 #676F13 #136F49

square

#1B136F #6F1339 #676F13 #136F49

split-complementary

#1B136F #6F4913 #396F13

monochromatic

#06041A #0E0A3B #1B136F #281CA3 #3425D8

Accessibility & contrast

On white

15.34

#1B136F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1B136F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B136F

15.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B136F	#FFFFFF	#000000	##FFFFFF
##1B136F	1.00	15.34	1.37	15.34
#FFFFFF	15.34	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002972

Deuteranopia (green-blind)

#00216D

Tritanopia (blue-blind)

#002F41

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b136f;
/* rgb */ color: rgb(27, 19, 111);
/* oklch */ color: oklch(28.0% 0.148 274.9);

Tailwind

colors: {
  custom: {
    50: '#675399',
    500: '#1b136f',
    950: '#000000',
  },
}

SCSS

$custom: #1b136f;
$custom-light: #675399;
$custom-dark: #000000;

JSON

{
  "hex": "#1b136f",
  "rgb": {
    "r": 27,
    "g": 19,
    "b": 111
  },
  "hsl": {
    "h": 245.217,
    "s": 70.769,
    "l": 25.49
  },
  "oklch": {
    "l": 0.2797,
    "c": 0.14775,
    "h": 274.9
  },
  "luminance": 0.01846
}

Semantic roles & 50–950 ramp

primary

#1B136F

secondary

#9CA638

accent

#EE3ADE

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B136F

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

Preview Lab → · Contrast checker → · Palette generator →