#4158CB#4158CB

#4158CB is a mid, vivid blue. Relative luminance 0.124; OKLCH L 51.0% C 0.180 H 270.2°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#4158CB
RGB	rgb(65, 88, 203)
HSL	hsl(230, 57%, 53%)
HSV	hsv(230, 68%, 80%)
CMYK	cmyk(68%, 56.7%, 0%, 20.4%)
CIE-LAB	lab(41.87, 29.19, -62.37)
CIE-LCH	lch(41.87, 68.87, 295.08°)
OKLab	oklab(51% 0.0007 -0.1796)
OKLCH	oklch(51% 0.18 270.2)
XYZ	xyz(16.4455, 12.4135, 58.0177)
Luminance	0.1241 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4158CB #CBB441

analogous

#419DCB #4158CB #6F41CB

triadic

#4158CB #CB4158 #58CB41

tetradic

#4158CB #CB419D #CBB441 #41CB6F

square

#4158CB #CB419D #CBB441 #41CB6F

split-complementary

#4158CB #CB6F41 #9DCB41

monochromatic

#1F2D72 #2C40A2 #4158CB #7182D8 #A1ACE5

Accessibility & contrast

On white

6.03

#4158CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#4158CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4158CB

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4158CB	#FFFFFF	#000000	##FFFFFF
##4158CB	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CF

Deuteranopia (green-blind)

#005DC9

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4158cb;
/* rgb */ color: rgb(65, 88, 203);
/* oklch */ color: oklch(51.0% 0.180 270.2);

Tailwind

colors: {
  custom: {
    50: '#8686dc',
    500: '#4158cb',
    950: '#000000',
  },
}

SCSS

$custom: #4158cb;
$custom-light: #8686dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4158cb",
  "rgb": {
    "r": 65,
    "g": 88,
    "b": 203
  },
  "hsl": {
    "h": 230,
    "s": 57.025,
    "l": 52.549
  },
  "oklch": {
    "l": 0.51003,
    "c": 0.1796,
    "h": 270.2
  },
  "luminance": 0.12415
}

Semantic roles & 50–950 ramp

primary

#4158CB

secondary

#D2C896

accent

#C748E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4158CB

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

Preview Lab → · Contrast checker → · Palette generator →