#1B509A#1B509A

#1B509A is a dark, vivid cyan. Relative luminance 0.083; OKLCH L 44.0% C 0.133 H 257.8°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#1B509A
RGB	rgb(27, 80, 154)
HSL	hsl(215, 70%, 35%)
HSV	hsv(215, 82%, 60%)
CMYK	cmyk(82.5%, 48.1%, 0%, 39.6%)
CIE-LAB	lab(34.60, 11.04, -45.29)
CIE-LCH	lch(34.60, 46.61, 283.70°)
OKLab	oklab(43.96% -0.0281 -0.1301)
OKLCH	oklch(43.96% 0.133 257.8)
XYZ	xyz(9.1512, 8.3023, 31.6858)
Luminance	0.0830 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B509A #9A651B

analogous

#1B8F9A #1B509A #261B9A

triadic

#1B509A #9A1B50 #509A1B

tetradic

#1B509A #9A1B8F #9A651B #1B9A26

square

#1B509A #9A1B8F #9A651B #1B9A26

split-complementary

#1B509A #9A261B #8F9A1B

monochromatic

#091A32 #123566 #1B509A #246BCE #4F8CE0

Accessibility & contrast

On white

7.89

#1B509A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1B509A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B509A

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B509A	#FFFFFF	#000000	##FFFFFF
##1B509A	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27579D

Deuteranopia (green-blind)

#004C99

Tritanopia (blue-blind)

#00626D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b509a;
/* rgb */ color: rgb(27, 80, 154);
/* oklch */ color: oklch(44.0% 0.133 257.8);

Tailwind

colors: {
  custom: {
    50: '#6d80b8',
    500: '#1b509a',
    950: '#000000',
  },
}

SCSS

$custom: #1b509a;
$custom-light: #6d80b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b509a",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 154
  },
  "hsl": {
    "h": 214.961,
    "s": 70.166,
    "l": 35.49
  },
  "oklch": {
    "l": 0.43956,
    "c": 0.13313,
    "h": 257.8
  },
  "luminance": 0.08303
}

Semantic roles & 50–950 ramp

primary

#1B509A

secondary

#C3924E

accent

#A33BED

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1B509A

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

Preview Lab → · Contrast checker → · Palette generator →