#1E78B3#1E78B3

#1E78B3 is a mid, vivid cyan. Relative luminance 0.170; OKLCH L 55.1% C 0.122 H 243.4°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#1E78B3
RGB	rgb(30, 120, 179)
HSL	hsl(204, 71%, 41%)
HSV	hsv(204, 83%, 70%)
CMYK	cmyk(83.2%, 33%, 0%, 29.8%)
CIE-LAB	lab(48.21, -4.28, -38.38)
CIE-LCH	lch(48.21, 38.62, 263.64°)
OKLab	oklab(55.08% -0.0547 -0.1091)
OKLCH	oklch(55.08% 0.122 243.4)
XYZ	xyz(15.3854, 16.9617, 45.1021)
Luminance	0.1696 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E78B3 #B3591E

analogous

#1EB3A3 #1E78B3 #1E2EB3

triadic

#1E78B3 #B31E78 #78B31E

tetradic

#1E78B3 #A31EB3 #B3591E #2EB31E

square

#1E78B3 #A31EB3 #B3591E #2EB31E

split-complementary

#1E78B3 #B31E2E #B3A31E

monochromatic

#0C324A #15557F #1E78B3 #3299DD #66B3E5

Accessibility & contrast

On white

4.78

#1E78B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#1E78B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1E78B3

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E78B3	#FFFFFF	#000000	##FFFFFF
##1E78B3	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7AB6

Deuteranopia (green-blind)

#476CB2

Tritanopia (blue-blind)

#00878D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #1e78b3;
/* rgb */ color: rgb(30, 120, 179);
/* oklch */ color: oklch(55.1% 0.122 243.4);

Tailwind

colors: {
  custom: {
    50: '#749eca',
    500: '#1e78b3',
    950: '#000000',
  },
}

SCSS

$custom: #1e78b3;
$custom-light: #749eca;
$custom-dark: #000000;

JSON

{
  "hex": "#1e78b3",
  "rgb": {
    "r": 30,
    "g": 120,
    "b": 179
  },
  "hsl": {
    "h": 203.758,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.55085,
    "c": 0.12201,
    "h": 243.4
  },
  "luminance": 0.16964
}

Semantic roles & 50–950 ramp

primary

#1E78B3

secondary

#CB8C62

accent

#813AEE

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #1E78B3

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

Preview Lab → · Contrast checker → · Palette generator →