#1957B4#1957B4

#1957B4 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.4% C 0.160 H 259.1°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#1957B4
RGB	rgb(25, 87, 180)
HSL	hsl(216, 76%, 40%)
HSV	hsv(216, 86%, 71%)
CMYK	cmyk(86.1%, 51.7%, 0%, 29.4%)
CIE-LAB	lab(38.41, 16.64, -54.65)
CIE-LCH	lch(38.41, 57.13, 286.93°)
OKLab	oklab(47.44% -0.0303 -0.1576)
OKLCH	oklch(47.44% 0.16 259.1)
XYZ	xyz(12.0443, 10.3168, 44.5277)
Luminance	0.1032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1957B4 #B47619

analogous

#19A4B4 #1957B4 #2819B4

triadic

#1957B4 #B41957 #57B419

tetradic

#1957B4 #B419A4 #B47619 #19B428

square

#1957B4 #B419A4 #B47619 #19B428

split-complementary

#1957B4 #B42819 #A4B419

monochromatic

#0A2349 #123D7E #1957B4 #2973E1 #5F96E9

Accessibility & contrast

On white

6.85

#1957B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#1957B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1957B4

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1957B4	#FFFFFF	#000000	##FFFFFF
##1957B4	1.00	6.85	3.06	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1762B7

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1957b4;
/* rgb */ color: rgb(25, 87, 180);
/* oklch */ color: oklch(47.4% 0.160 259.1);

Tailwind

colors: {
  custom: {
    50: '#7385cb',
    500: '#1957b4',
    950: '#000000',
  },
}

SCSS

$custom: #1957b4;
$custom-light: #7385cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1957b4",
  "rgb": {
    "r": 25,
    "g": 87,
    "b": 180
  },
  "hsl": {
    "h": 216,
    "s": 75.61,
    "l": 40.196
  },
  "oklch": {
    "l": 0.47438,
    "c": 0.16045,
    "h": 259.1
  },
  "luminance": 0.10318
}

Semantic roles & 50–950 ramp

primary

#1957B4

secondary

#CDA05C

accent

#A736F2

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1957B4

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

Preview Lab → · Contrast checker → · Palette generator →