#288EB4#288EB4

#288EB4 is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 60.7% C 0.106 H 228.1°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#288EB4
RGB	rgb(40, 142, 180)
HSL	hsl(196, 64%, 43%)
HSV	hsv(196, 78%, 71%)
CMYK	cmyk(77.8%, 21.1%, 0%, 29.4%)
CIE-LAB	lab(55.16, -15.51, -28.06)
CIE-LCH	lch(55.16, 32.06, 241.07°)
OKLab	oklab(60.69% -0.0709 -0.0788)
OKLCH	oklch(60.69% 0.106 228.1)
XYZ	xyz(18.7829, 23.0901, 46.6381)
Luminance	0.2309 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288EB4 #B44E28

analogous

#28B494 #288EB4 #2848B4

triadic

#288EB4 #B4288E #8EB428

tetradic

#288EB4 #9428B4 #B44E28 #48B428

square

#288EB4 #9428B4 #B44E28 #48B428

split-complementary

#288EB4 #B42848 #B49428

monochromatic

#123F50 #1D6682 #288EB4 #44AED5 #76C4E1

Accessibility & contrast

On white

3.74

#288EB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#288EB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288EB4

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288EB4	#FFFFFF	#000000	##000000
##288EB4	1.00	3.74	5.62	5.62
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8CB6

Deuteranopia (green-blind)

#677EB3

Tritanopia (blue-blind)

#00999B

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #288eb4;
/* rgb */ color: rgb(40, 142, 180);
/* oklch */ color: oklch(60.7% 0.106 228.1);

Tailwind

colors: {
  custom: {
    50: '#78afca',
    500: '#288eb4',
    950: '#000000',
  },
}

SCSS

$custom: #288eb4;
$custom-light: #78afca;
$custom-dark: #000000;

JSON

{
  "hex": "#288eb4",
  "rgb": {
    "r": 40,
    "g": 142,
    "b": 180
  },
  "hsl": {
    "h": 196.286,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.60689,
    "c": 0.106,
    "h": 228.1
  },
  "luminance": 0.23092
}

Semantic roles & 50–950 ramp

primary

#288EB4

secondary

#C88870

accent

#6E41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288EB4

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

Preview Lab → · Contrast checker → · Palette generator →