#657AD3
Closest named color: Soft Blue (#6488EA). oklch(60.4% 0.137 271.7), rgb(101, 122, 211).
Aa
Black text reads best on this color (5.27:1).
About this color
#657AD3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.137 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.046 away. Black text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.27:1 |
| White text | 3.97:1 |
Values
| HEX | #657AD3 |
| RGB | rgb(101, 122, 211) |
| HSL | hsl(229, 56%, 61%) |
| OKLCH | oklch(60.4% 0.137 271.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #657AD3 | 3.97:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #657AD3 | 5.27:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #657AD3 text on white | 3.97:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #657AD3 text on black | 5.27:1 | AA | Lc -34.7 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B1BFED
oklch(81% 0.067 271.6)
-
Step 400
400
#899CE4
oklch(70.7% 0.108 272.1)
-
Step 500
500 (this color)
#657AD3
oklch(60.4% 0.137 271.7)
-
Step 600
600
#566ACA
oklch(55.7% 0.149 271.9)
-
Step 700
700
#4658AE
oklch(49.1% 0.138 271.6)
-
Step 800
800
#3A488D
oklch(42.7% 0.115 272.1)
-
Step 900
900
#313D71
oklch(37.7% 0.09 271.7)
-
Step 950
950
#1D2442
oklch(27% 0.057 272.2)
#657AD3 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5584D6 | 0.029 |
| Deuteranopia (no green cones) | #497BD1 | 0.031 |
| Tritanopia (no blue cones) | #328D9C | 0.122 |
| Achromatopsia (no color) | #7F7F7F | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #657AD3
#657AD3
oklch(60.4% 0.137 271.7)
- #9C7E00
#9C7E00
oklch(60.4% 0.124 92)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #657AD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.046
- Cornflower #6A79F7 ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.058
- Windows Blue #3778BF ΔE 0.060
- Cool Blue #4984B8 ΔE 0.063
- Steel Blue #4682B4 ΔE 0.067
- Dark Periwinkle #665FD1 ΔE 0.068
- Faded Blue #658CBB ΔE 0.068
Use #657AD3 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.