#288AB1#288AB1

#288AB1 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.6% C 0.105 H 229.6°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#288AB1
RGB	rgb(40, 138, 177)
HSL	hsl(197, 63%, 43%)
HSV	hsv(197, 77%, 69%)
CMYK	cmyk(77.4%, 22%, 0%, 30.6%)
CIE-LAB	lab(53.81, -14.35, -28.44)
CIE-LCH	lch(53.81, 31.85, 243.23°)
OKLab	oklab(59.57% -0.0681 -0.08)
OKLCH	oklch(59.57% 0.105 229.6)
XYZ	xyz(17.8961, 21.8002, 44.8511)
Luminance	0.2180 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288AB1 #B14F28

analogous

#28B193 #288AB1 #2846B1

triadic

#288AB1 #B1288A #8AB128

tetradic

#288AB1 #9328B1 #B14F28 #46B128

square

#288AB1 #9328B1 #B14F28 #46B128

split-complementary

#288AB1 #B12846 #B19328

monochromatic

#113C4D #1D637F #288AB1 #42ABD4 #74C1E0

Accessibility & contrast

On white

3.92

#288AB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#288AB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288AB1

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288AB1	#FFFFFF	#000000	##000000
##288AB1	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7688B3

Deuteranopia (green-blind)

#647BB0

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #288ab1;
/* rgb */ color: rgb(40, 138, 177);
/* oklch */ color: oklch(59.6% 0.105 229.6);

Tailwind

colors: {
  custom: {
    50: '#77acc8',
    500: '#288ab1',
    950: '#000000',
  },
}

SCSS

$custom: #288ab1;
$custom-light: #77acc8;
$custom-dark: #000000;

JSON

{
  "hex": "#288ab1",
  "rgb": {
    "r": 40,
    "g": 138,
    "b": 177
  },
  "hsl": {
    "h": 197.08,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.59567,
    "c": 0.10502,
    "h": 229.6
  },
  "luminance": 0.21802
}

Semantic roles & 50–950 ramp

primary

#288AB1

secondary

#C7876E

accent

#7042E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288AB1

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

Preview Lab → · Contrast checker → · Palette generator →