#1D5B8A#1D5B8A

#1D5B8A is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.6% C 0.099 H 245.6°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#1D5B8A
RGB	rgb(29, 91, 138)
HSL	hsl(206, 65%, 33%)
HSV	hsv(206, 79%, 54%)
CMYK	cmyk(79%, 34.1%, 0%, 45.9%)
CIE-LAB	lab(37.07, -2.28, -31.65)
CIE-LCH	lch(37.07, 31.73, 265.88°)
OKLab	oklab(45.58% -0.0407 -0.0899)
OKLCH	oklch(45.58% 0.099 245.6)
XYZ	xyz(8.8335, 9.5773, 25.4229)
Luminance	0.0958 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5B8A #8A4C1D

analogous

#1D8A83 #1D5B8A #1D248A

triadic

#1D5B8A #8A1D5B #5B8A1D

tetradic

#1D5B8A #831D8A #8A4C1D #248A1D

square

#1D5B8A #831D8A #8A4C1D #248A1D

split-complementary

#1D5B8A #8A1D24 #8A831D

monochromatic

#081825 #123A57 #1D5B8A #287CBD #499BD9

Accessibility & contrast

On white

7.20

#1D5B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#1D5B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5B8A

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5B8A	#FFFFFF	#000000	##FFFFFF
##1D5B8A	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455D8C

Deuteranopia (green-blind)

#365389

Tritanopia (blue-blind)

#00666C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1d5b8a;
/* rgb */ color: rgb(29, 91, 138);
/* oklch */ color: oklch(45.6% 0.099 245.6);

Tailwind

colors: {
  custom: {
    50: '#6a89ac',
    500: '#1d5b8a',
    950: '#000000',
  },
}

SCSS

$custom: #1d5b8a;
$custom-light: #6a89ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5b8a",
  "rgb": {
    "r": 29,
    "g": 91,
    "b": 138
  },
  "hsl": {
    "h": 205.872,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.45584,
    "c": 0.09867,
    "h": 245.6
  },
  "luminance": 0.09578
}

Semantic roles & 50–950 ramp

primary

#1D5B8A

secondary

#BB7A48

accent

#8840E8

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1D5B8A

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

Preview Lab → · Contrast checker → · Palette generator →