#2599B2#2599B2

#2599B2 is a light, moderate cyan. Relative luminance 0.264; OKLCH L 63.2% C 0.104 H 216.3°. Best body text is #000000 at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#2599B2
RGB	rgb(37, 153, 178)
HSL	hsl(191, 66%, 42%)
HSV	hsv(191, 79%, 70%)
CMYK	cmyk(79.2%, 14%, 0%, 30.2%)
CIE-LAB	lab(58.40, -22.39, -21.94)
CIE-LCH	lch(58.40, 31.35, 224.43°)
OKLab	oklab(63.25% -0.0835 -0.0613)
OKLCH	oklch(63.25% 0.104 216.3)
XYZ	xyz(20.1866, 26.3876, 46.1402)
Luminance	0.2639 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2599B2 #B23E25

analogous

#25B284 #2599B2 #2553B2

triadic

#2599B2 #B22599 #99B225

tetradic

#2599B2 #8425B2 #B23E25 #53B225

square

#2599B2 #8425B2 #B23E25 #53B225

split-complementary

#2599B2 #B22553 #B28425

monochromatic

#10424D #1A6D7F #2599B2 #3DBCD7 #70CDE1

Accessibility & contrast

On white

3.35

#2599B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.28

#2599B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2599B2

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2599B2	#FFFFFF	#000000	##000000
##2599B2	1.00	3.35	6.28	6.28
#FFFFFF	3.35	1.00	21.00	21.00
#000000	6.28	21.00	1.00	1.00
##000000	6.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8894B3

Deuteranopia (green-blind)

#7587B2

Tritanopia (blue-blind)

#00A2A1

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #2599b2;
/* rgb */ color: rgb(37, 153, 178);
/* oklch */ color: oklch(63.2% 0.104 216.3);

Tailwind

colors: {
  custom: {
    50: '#78b7c9',
    500: '#2599b2',
    950: '#000000',
  },
}

SCSS

$custom: #2599b2;
$custom-light: #78b7c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2599b2",
  "rgb": {
    "r": 37,
    "g": 153,
    "b": 178
  },
  "hsl": {
    "h": 190.638,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.63246,
    "c": 0.10357,
    "h": 216.3
  },
  "luminance": 0.2639
}

Semantic roles & 50–950 ramp

primary

#2599B2

secondary

#C87B6B

accent

#5D3FE9

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #2599B2

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

Preview Lab → · Contrast checker → · Palette generator →