#288AB0#288AB0

#288AB0 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.5% C 0.104 H 228.9°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#288AB0
RGB	rgb(40, 138, 176)
HSL	hsl(197, 63%, 42%)
HSV	hsv(197, 77%, 69%)
CMYK	cmyk(77.3%, 21.6%, 0%, 31%)
CIE-LAB	lab(53.77, -14.69, -27.93)
CIE-LCH	lch(53.77, 31.56, 242.25°)
OKLab	oklab(59.52% -0.0685 -0.0785)
OKLCH	oklch(59.52% 0.104 228.9)
XYZ	xyz(17.7968, 21.7605, 44.3281)
Luminance	0.2176 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288AB0 #B04E28

analogous

#28B092 #288AB0 #2846B0

triadic

#288AB0 #B0288A #8AB028

tetradic

#288AB0 #9228B0 #B04E28 #46B028

square

#288AB0 #9228B0 #B04E28 #46B028

split-complementary

#288AB0 #B02846 #B09228

monochromatic

#113C4C #1D637E #288AB0 #41ABD4 #73C1DF

Accessibility & contrast

On white

3.92

#288AB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#288AB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288AB0

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288AB0	#FFFFFF	#000000	##000000
##288AB0	1.00	3.92	5.35	5.35
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7688B2

Deuteranopia (green-blind)

#647BAF

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #288ab0;
/* rgb */ color: rgb(40, 138, 176);
/* oklch */ color: oklch(59.5% 0.104 228.9);

Tailwind

colors: {
  custom: {
    50: '#77acc7',
    500: '#288ab0',
    950: '#000000',
  },
}

SCSS

$custom: #288ab0;
$custom-light: #77acc7;
$custom-dark: #000000;

JSON

{
  "hex": "#288ab0",
  "rgb": {
    "r": 40,
    "g": 138,
    "b": 176
  },
  "hsl": {
    "h": 196.765,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.59519,
    "c": 0.10416,
    "h": 228.9
  },
  "luminance": 0.21763
}

Semantic roles & 50–950 ramp

primary

#288AB0

secondary

#C6866D

accent

#7042E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288AB0

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

Preview Lab → · Contrast checker → · Palette generator →