#1C5E9F#1C5E9F

#1C5E9F is a mid, vivid cyan. Relative luminance 0.108; OKLCH L 47.6% C 0.123 H 251.9°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#1C5E9F
RGB	rgb(28, 94, 159)
HSL	hsl(210, 70%, 37%)
HSV	hsv(210, 82%, 62%)
CMYK	cmyk(82.4%, 40.9%, 0%, 37.6%)
CIE-LAB	lab(39.16, 3.93, -40.98)
CIE-LCH	lch(39.16, 41.17, 275.48°)
OKLab	oklab(47.6% -0.0382 -0.1172)
OKLCH	oklch(47.6% 0.123 251.9)
XYZ	xyz(10.7372, 10.7542, 34.3040)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C5E9F #9F5D1C

analogous

#1C9F9F #1C5E9F #1C1D9F

triadic

#1C5E9F #9F1C5E #5E9F1C

tetradic

#1C5E9F #9F1C9F #9F5D1C #1D9F1C

square

#1C5E9F #9F1C9F #9F5D1C #1D9F1C

split-complementary

#1C5E9F #9F1C1D #9F9F1C

monochromatic

#0A2037 #133F6B #1C5E9F #257DD3 #549BE1

Accessibility & contrast

On white

6.66

#1C5E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#1C5E9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C5E9F

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C5E9F	#FFFFFF	#000000	##FFFFFF
##1C5E9F	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)

#28579E

Tritanopia (blue-blind)

#006E76

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1c5e9f;
/* rgb */ color: rgb(28, 94, 159);
/* oklch */ color: oklch(47.6% 0.123 251.9);

Tailwind

colors: {
  custom: {
    50: '#6f8bbc',
    500: '#1c5e9f',
    950: '#000000',
  },
}

SCSS

$custom: #1c5e9f;
$custom-light: #6f8bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c5e9f",
  "rgb": {
    "r": 28,
    "g": 94,
    "b": 159
  },
  "hsl": {
    "h": 209.771,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.47603,
    "c": 0.12325,
    "h": 251.9
  },
  "luminance": 0.10755
}

Semantic roles & 50–950 ramp

primary

#1C5E9F

secondary

#C48B53

accent

#933BED

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1C5E9F

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

Preview Lab → · Contrast checker → · Palette generator →