#258DB3#258DB3

#258DB3 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.3% C 0.107 H 227.9°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#258DB3
RGB	rgb(37, 141, 179)
HSL	hsl(196, 66%, 42%)
HSV	hsv(196, 79%, 70%)
CMYK	cmyk(79.3%, 21.2%, 0%, 29.8%)
CIE-LAB	lab(54.76, -15.63, -28.13)
CIE-LCH	lch(54.76, 32.18, 240.93°)
OKLab	oklab(60.33% -0.0715 -0.0791)
OKLCH	oklch(60.33% 0.107 227.9)
XYZ	xyz(18.4212, 22.6955, 46.0489)
Luminance	0.2270 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258DB3 #B34B25

analogous

#25B392 #258DB3 #2546B3

triadic

#258DB3 #B3258D #8DB325

tetradic

#258DB3 #9225B3 #B34B25 #46B325

square

#258DB3 #9225B3 #B34B25 #46B325

split-complementary

#258DB3 #B32546 #B39225

monochromatic

#103D4E #1B6580 #258DB3 #3EAED7 #71C3E2

Accessibility & contrast

On white

3.79

#258DB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#258DB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258DB3

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258DB3	#FFFFFF	#000000	##000000
##258DB3	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798BB5

Deuteranopia (green-blind)

#667DB2

Tritanopia (blue-blind)

#00989A

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #258db3;
/* rgb */ color: rgb(37, 141, 179);
/* oklch */ color: oklch(60.3% 0.107 227.9);

Tailwind

colors: {
  custom: {
    50: '#77aeca',
    500: '#258db3',
    950: '#000000',
  },
}

SCSS

$custom: #258db3;
$custom-light: #77aeca;
$custom-dark: #000000;

JSON

{
  "hex": "#258db3",
  "rgb": {
    "r": 37,
    "g": 141,
    "b": 179
  },
  "hsl": {
    "h": 196.056,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.60332,
    "c": 0.10658,
    "h": 227.9
  },
  "luminance": 0.22698
}

Semantic roles & 50–950 ramp

primary

#258DB3

secondary

#C8846B

accent

#6C3FE9

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #258DB3

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

Preview Lab → · Contrast checker → · Palette generator →