#1891B4#1891B4

#1891B4 is a mid, moderate cyan. Relative luminance 0.237; OKLCH L 61.1% C 0.110 H 223.9°. Best body text is #000000 at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#1891B4
RGB	rgb(24, 145, 180)
HSL	hsl(193, 76%, 40%)
HSV	hsv(193, 87%, 71%)
CMYK	cmyk(86.7%, 19.4%, 0%, 29.4%)
CIE-LAB	lab(55.82, -18.59, -27.06)
CIE-LCH	lch(55.82, 32.83, 235.51°)
OKLab	oklab(61.14% -0.079 -0.076)
OKLCH	oklch(61.14% 0.11 223.9)
XYZ	xyz(18.7368, 23.7378, 46.7655)
Luminance	0.2374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1891B4 #B43B18

analogous

#18B489 #1891B4 #1843B4

triadic

#1891B4 #B41891 #91B418

tetradic

#1891B4 #8918B4 #B43B18 #43B418

square

#1891B4 #8918B4 #B43B18 #43B418

split-complementary

#1891B4 #B41843 #B48918

monochromatic

#0A3A48 #11657E #1891B4 #27B8E2 #5DCAE9

Accessibility & contrast

On white

3.65

#1891B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.75

#1891B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1891B4

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1891B4	#FFFFFF	#000000	##000000
##1891B4	1.00	3.65	5.75	5.75
#FFFFFF	3.65	1.00	21.00	21.00
#000000	5.75	21.00	1.00	1.00
##000000	5.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8EB6

Deuteranopia (green-blind)

#6A80B4

Tritanopia (blue-blind)

#009C9C

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #1891b4;
/* rgb */ color: rgb(24, 145, 180);
/* oklch */ color: oklch(61.1% 0.110 223.9);

Tailwind

colors: {
  custom: {
    50: '#74b1ca',
    500: '#1891b4',
    950: '#000000',
  },
}

SCSS

$custom: #1891b4;
$custom-light: #74b1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1891b4",
  "rgb": {
    "r": 24,
    "g": 145,
    "b": 180
  },
  "hsl": {
    "h": 193.462,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.61142,
    "c": 0.10967,
    "h": 223.9
  },
  "luminance": 0.2374
}

Semantic roles & 50–950 ramp

primary

#1891B4

secondary

#CD745B

accent

#5F35F3

background

#F7FAFC

surface

#EEF5F8

border

#C9CFD1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1891B4

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

Preview Lab → · Contrast checker → · Palette generator →