#1B459B#1B459B

#1B459B is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.6% C 0.148 H 262.4°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B459B
RGB	rgb(27, 69, 155)
HSL	hsl(220, 70%, 36%)
HSV	hsv(220, 83%, 61%)
CMYK	cmyk(82.6%, 55.5%, 0%, 39.2%)
CIE-LAB	lab(31.47, 18.92, -50.95)
CIE-LCH	lch(31.47, 54.35, 290.37°)
OKLab	oklab(41.59% -0.0197 -0.147)
OKLCH	oklch(41.59% 0.148 262.4)
XYZ	xyz(8.4944, 6.8548, 31.8794)
Luminance	0.0686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B459B #9B711B

analogous

#1B859B #1B459B #311B9B

triadic

#1B459B #9B1B45 #459B1B

tetradic

#1B459B #9B1B85 #9B711B #1B9B31

square

#1B459B #9B1B85 #9B711B #1B9B31

split-complementary

#1B459B #9B311B #859B1B

monochromatic

#091733 #122E67 #1B459B #245CCF #507FE0

Accessibility & contrast

On white

8.86

#1B459B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1B459B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B459B

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B459B	#FFFFFF	#000000	##FFFFFF
##1B459B	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509E

Deuteranopia (green-blind)

#004499

Tritanopia (blue-blind)

#005A69

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b459b;
/* rgb */ color: rgb(27, 69, 155);
/* oklch */ color: oklch(41.6% 0.148 262.4);

Tailwind

colors: {
  custom: {
    50: '#6e78b9',
    500: '#1b459b',
    950: '#000000',
  },
}

SCSS

$custom: #1b459b;
$custom-light: #6e78b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b459b",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 155
  },
  "hsl": {
    "h": 220.313,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.41586,
    "c": 0.14835,
    "h": 262.4
  },
  "luminance": 0.06856
}

Semantic roles & 50–950 ramp

primary

#1B459B

secondary

#C39D4F

accent

#B33BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B459B

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

Preview Lab → · Contrast checker → · Palette generator →