#1E51A5#1E51A5

#1E51A5 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.1% C 0.146 H 260.0°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#1E51A5
RGB	rgb(30, 81, 165)
HSL	hsl(217, 69%, 38%)
HSV	hsv(217, 82%, 65%)
CMYK	cmyk(81.8%, 50.9%, 0%, 35.3%)
CIE-LAB	lab(35.74, 15.09, -50.05)
CIE-LCH	lch(35.74, 52.27, 286.77°)
OKLab	oklab(45.1% -0.0254 -0.1441)
OKLCH	oklch(45.1% 0.146 260)
XYZ	xyz(10.2669, 8.8763, 36.7622)
Luminance	0.0888 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E51A5 #A5721E

analogous

#1E94A5 #1E51A5 #2E1EA5

triadic

#1E51A5 #A51E51 #51A51E

tetradic

#1E51A5 #A51E94 #A5721E #1EA52E

square

#1E51A5 #A51E94 #A5721E #1EA52E

split-complementary

#1E51A5 #A52E1E #94A51E

monochromatic

#0B1E3D #153871 #1E51A5 #286BD8 #5C8EE1

Accessibility & contrast

On white

7.57

#1E51A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#1E51A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E51A5

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E51A5	#FFFFFF	#000000	##FFFFFF
##1E51A5	1.00	7.57	2.78	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C5BA8

Deuteranopia (green-blind)

#004EA3

Tritanopia (blue-blind)

#006573

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1e51a5;
/* rgb */ color: rgb(30, 81, 165);
/* oklch */ color: oklch(45.1% 0.146 260.0);

Tailwind

colors: {
  custom: {
    50: '#7181c0',
    500: '#1e51a5',
    950: '#000000',
  },
}

SCSS

$custom: #1e51a5;
$custom-light: #7181c0;
$custom-dark: #000000;

JSON

{
  "hex": "#1e51a5",
  "rgb": {
    "r": 30,
    "g": 81,
    "b": 165
  },
  "hsl": {
    "h": 217.333,
    "s": 69.231,
    "l": 38.235
  },
  "oklch": {
    "l": 0.45099,
    "c": 0.14632,
    "h": 260
  },
  "luminance": 0.08877
}

Semantic roles & 50–950 ramp

primary

#1E51A5

secondary

#C59D59

accent

#A93CEC

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1E51A5

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

Preview Lab → · Contrast checker → · Palette generator →