#5BB1EB#5BB1EB

#5BB1EB is a light, moderate cyan. Relative luminance 0.397; OKLCH L 73.1% C 0.119 H 240.6°. Best body text is #000000 at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#5BB1EB
RGB	rgb(91, 177, 235)
HSL	hsl(204, 78%, 64%)
HSV	hsv(204, 61%, 92%)
CMYK	cmyk(61.3%, 24.7%, 0%, 7.8%)
CIE-LAB	lab(69.23, -8.89, -36.77)
CIE-LCH	lch(69.23, 37.83, 256.40°)
OKLab	oklab(73.06% -0.0583 -0.1032)
OKLCH	oklch(73.06% 0.119 240.6)
XYZ	xyz(35.0263, 39.6632, 84.3910)
Luminance	0.3967 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB1EB #EB955B

analogous

#5BEBDD #5BB1EB #5B69EB

triadic

#5BB1EB #EB5BB1 #B1EB5B

tetradic

#5BB1EB #DD5BEB #EB955B #69EB5B

square

#5BB1EB #DD5BEB #EB955B #69EB5B

split-complementary

#5BB1EB #EB5B69 #EBDD5B

monochromatic

#1675B5 #2497E4 #5BB1EB #92CBF2 #C8E5F8

Accessibility & contrast

On white

2.35

#5BB1EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.93

#5BB1EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB1EB

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB1EB	#FFFFFF	#000000	##000000
##5BB1EB	1.00	2.35	8.93	8.93
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.93	21.00	1.00	1.00
##000000	8.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97B1EE

Deuteranopia (green-blind)

#83A3EA

Tritanopia (blue-blind)

#00BFC5

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #5bb1eb;
/* rgb */ color: rgb(91, 177, 235);
/* oklch */ color: oklch(73.1% 0.119 240.6);

Tailwind

colors: {
  custom: {
    50: '#96c8f1',
    500: '#5bb1eb',
    950: '#000000',
  },
}

SCSS

$custom: #5bb1eb;
$custom-light: #96c8f1;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb1eb",
  "rgb": {
    "r": 91,
    "g": 177,
    "b": 235
  },
  "hsl": {
    "h": 204.167,
    "s": 78.261,
    "l": 63.922
  },
  "oklch": {
    "l": 0.73055,
    "c": 0.11855,
    "h": 240.6
  },
  "luminance": 0.39667
}

Semantic roles & 50–950 ramp

primary

#5BB1EB

secondary

#EACCB8

accent

#5F0BDB

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #5BB1EB

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

Preview Lab → · Contrast checker → · Palette generator →