#1890B4#1890B4

#1890B4 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 60.9% C 0.110 H 224.7°. Best body text is #000000 at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#1890B4
RGB	rgb(24, 144, 180)
HSL	hsl(194, 76%, 40%)
HSV	hsv(194, 87%, 71%)
CMYK	cmyk(86.7%, 20%, 0%, 29.4%)
CIE-LAB	lab(55.52, -18.05, -27.54)
CIE-LCH	lch(55.52, 32.93, 236.76°)
OKLab	oklab(60.89% -0.0781 -0.0774)
OKLCH	oklch(60.89% 0.11 224.7)
XYZ	xyz(18.5847, 23.4336, 46.7148)
Luminance	0.2344 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1890B4 #B43C18

analogous

#18B48A #1890B4 #1842B4

triadic

#1890B4 #B41890 #90B418

tetradic

#1890B4 #8A18B4 #B43C18 #42B418

square

#1890B4 #8A18B4 #B43C18 #42B418

split-complementary

#1890B4 #B41842 #B48A18

monochromatic

#0A3A48 #11657E #1890B4 #27B7E2 #5DC9E9

Accessibility & contrast

On white

3.69

#1890B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.69

#1890B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1890B4

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1890B4	#FFFFFF	#000000	##000000
##1890B4	1.00	3.69	5.69	5.69
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.69	21.00	1.00	1.00
##000000	5.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8DB6

Deuteranopia (green-blind)

#687FB4

Tritanopia (blue-blind)

#009B9C

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #1890b4;
/* rgb */ color: rgb(24, 144, 180);
/* oklch */ color: oklch(60.9% 0.110 224.7);

Tailwind

colors: {
  custom: {
    50: '#74b0ca',
    500: '#1890b4',
    950: '#000000',
  },
}

SCSS

$custom: #1890b4;
$custom-light: #74b0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1890b4",
  "rgb": {
    "r": 24,
    "g": 144,
    "b": 180
  },
  "hsl": {
    "h": 193.846,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.60894,
    "c": 0.10996,
    "h": 224.7
  },
  "luminance": 0.23436
}

Semantic roles & 50–950 ramp

primary

#1890B4

secondary

#CD755B

accent

#6135F3

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1890B4

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

Preview Lab → · Contrast checker → · Palette generator →