#1D5E9F#1D5E9F

#1D5E9F is a mid, vivid cyan. Relative luminance 0.108; OKLCH L 47.6% C 0.123 H 252.2°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#1D5E9F
RGB	rgb(29, 94, 159)
HSL	hsl(210, 69%, 37%)
HSV	hsv(210, 82%, 62%)
CMYK	cmyk(81.8%, 40.9%, 0%, 37.6%)
CIE-LAB	lab(39.19, 4.04, -40.94)
CIE-LCH	lch(39.19, 41.14, 275.63°)
OKLab	oklab(47.63% -0.0377 -0.117)
OKLCH	oklch(47.63% 0.123 252.2)
XYZ	xyz(10.7650, 10.7685, 34.3053)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5E9F #9F5E1D

analogous

#1D9F9F #1D5E9F #1D1D9F

triadic

#1D5E9F #9F1D5E #5E9F1D

tetradic

#1D5E9F #9F1D9F #9F5E1D #1D9F1D

square

#1D5E9F #9F1D9F #9F5E1D #1D9F1D

split-complementary

#1D5E9F #9F1D1D #9F9F1D

monochromatic

#0A2137 #143F6B #1D5E9F #267DD3 #569BE0

Accessibility & contrast

On white

6.66

#1D5E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#1D5E9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5E9F

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5E9F	#FFFFFF	#000000	##FFFFFF
##1D5E9F	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E63A2

Deuteranopia (green-blind)

#29579E

Tritanopia (blue-blind)

#006D76

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1d5e9f;
/* rgb */ color: rgb(29, 94, 159);
/* oklch */ color: oklch(47.6% 0.123 252.2);

Tailwind

colors: {
  custom: {
    50: '#6f8bbc',
    500: '#1d5e9f',
    950: '#000000',
  },
}

SCSS

$custom: #1d5e9f;
$custom-light: #6f8bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5e9f",
  "rgb": {
    "r": 29,
    "g": 94,
    "b": 159
  },
  "hsl": {
    "h": 210,
    "s": 69.149,
    "l": 36.863
  },
  "oklch": {
    "l": 0.47629,
    "c": 0.12297,
    "h": 252.2
  },
  "luminance": 0.1077
}

Semantic roles & 50–950 ramp

primary

#1D5E9F

secondary

#C48C54

accent

#943CEC

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1D5E9F

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

Preview Lab → · Contrast checker → · Palette generator →