#1D539B#1D539B

#1D539B is a dark, vivid cyan. Relative luminance 0.088; OKLCH L 44.8% C 0.130 H 257.1°. Best body text is #FFFFFF at 7.60:1 contrast (WCAG AA passes).

Color values

HEX	#1D539B
RGB	rgb(29, 83, 155)
HSL	hsl(214, 68%, 36%)
HSV	hsv(214, 81%, 61%)
CMYK	cmyk(81.3%, 46.5%, 0%, 39.2%)
CIE-LAB	lab(35.62, 9.65, -44.25)
CIE-LCH	lch(35.62, 45.29, 282.30°)
OKLab	oklab(44.78% -0.0292 -0.127)
OKLCH	oklch(44.78% 0.13 257.1)
XYZ	xyz(9.5142, 8.8131, 32.2037)
Luminance	0.0881 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D539B #9B651D

analogous

#1D929B #1D539B #261D9B

triadic

#1D539B #9B1D53 #539B1D

tetradic

#1D539B #9B1D92 #9B651D #1D9B26

square

#1D539B #9B1D92 #9B651D #1D9B26

split-complementary

#1D539B #9B261D #929B1D

monochromatic

#0A1C34 #133767 #1D539B #276FCF #538FDF

Accessibility & contrast

On white

7.60

#1D539B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#1D539B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D539B

7.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D539B	#FFFFFF	#000000	##FFFFFF
##1D539B	1.00	7.60	2.76	7.60
#FFFFFF	7.60	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D5A9E

Deuteranopia (green-blind)

#0E4E9A

Tritanopia (blue-blind)

#00646F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1d539b;
/* rgb */ color: rgb(29, 83, 155);
/* oklch */ color: oklch(44.8% 0.130 257.1);

Tailwind

colors: {
  custom: {
    50: '#6e82b9',
    500: '#1d539b',
    950: '#000000',
  },
}

SCSS

$custom: #1d539b;
$custom-light: #6e82b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d539b",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 155
  },
  "hsl": {
    "h": 214.286,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.44778,
    "c": 0.13031,
    "h": 257.1
  },
  "luminance": 0.08814
}

Semantic roles & 50–950 ramp

primary

#1D539B

secondary

#C29252

accent

#A03CEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1D539B

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

Preview Lab → · Contrast checker → · Palette generator →