#1C509B#1C509B

#1C509B is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.1% C 0.134 H 258.3°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#1C509B
RGB	rgb(28, 80, 155)
HSL	hsl(215, 69%, 36%)
HSV	hsv(215, 82%, 61%)
CMYK	cmyk(81.9%, 48.4%, 0%, 39.2%)
CIE-LAB	lab(34.70, 11.55, -45.73)
CIE-LCH	lch(34.70, 47.17, 284.17°)
OKLab	oklab(44.06% -0.0273 -0.1314)
OKLCH	oklch(44.06% 0.134 258.3)
XYZ	xyz(9.2618, 8.3496, 32.1275)
Luminance	0.0835 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C509B #9B671C

analogous

#1C8F9B #1C509B #271C9B

triadic

#1C509B #9B1C50 #509B1C

tetradic

#1C509B #9B1C8F #9B671C #1C9B27

square

#1C509B #9B1C8F #9B671C #1C9B27

split-complementary

#1C509B #9B271C #8F9B1C

monochromatic

#091A33 #133567 #1C509B #256BCF #528CE0

Accessibility & contrast

On white

7.86

#1C509B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1C509B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C509B

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C509B	#FFFFFF	#000000	##FFFFFF
##1C509B	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26589E

Deuteranopia (green-blind)

#004C9A

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1c509b;
/* rgb */ color: rgb(28, 80, 155);
/* oklch */ color: oklch(44.1% 0.134 258.3);

Tailwind

colors: {
  custom: {
    50: '#6e80b9',
    500: '#1c509b',
    950: '#000000',
  },
}

SCSS

$custom: #1c509b;
$custom-light: #6e80b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1c509b",
  "rgb": {
    "r": 28,
    "g": 80,
    "b": 155
  },
  "hsl": {
    "h": 215.433,
    "s": 69.399,
    "l": 35.882
  },
  "oklch": {
    "l": 0.4406,
    "c": 0.13425,
    "h": 258.3
  },
  "luminance": 0.08351
}

Semantic roles & 50–950 ramp

primary

#1C509B

secondary

#C39450

accent

#A43CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1C509B

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

Preview Lab → · Contrast checker → · Palette generator →