#657DD8
Closest named color: Soft Blue (#6488EA). oklch(61.3% 0.14 270.7), rgb(101, 125, 216).
Aa
Black text reads best on this color (5.47:1).
About this color
#657DD8 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.140 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.036 away. Black text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.47:1 |
| White text | 3.83:1 |
Values
| HEX | #657DD8 |
| RGB | rgb(101, 125, 216) |
| HSL | hsl(227, 60%, 62%) |
| OKLCH | oklch(61.3% 0.14 270.7) |
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 #657DD8 | 3.83:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #657DD8 | 5.47:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #657DD8 text on white | 3.83:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #657DD8 text on black | 5.47:1 | AA | Lc -36.0 | 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
#E5EAF8
oklch(93.7% 0.02 270.2)
-
Step 200
200
#CFD8F3
oklch(88.4% 0.038 271)
-
Step 300
300
#B0BFEE
oklch(80.9% 0.069 271)
-
Step 400
400
#879DE5
oklch(70.8% 0.109 270.5)
-
Step 500
500 (this color)
#657DD8
oklch(61.3% 0.14 270.7)
-
Step 600
600
#536ACC
oklch(55.6% 0.153 270.8)
-
Step 700
700
#4458B0
oklch(49.2% 0.141 270.8)
-
Step 800
800
#38488F
oklch(42.7% 0.118 271.1)
-
Step 900
900
#303D72
oklch(37.7% 0.092 271.1)
-
Step 950
950
#1C2443
oklch(27% 0.059 271.1)
#657DD8 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) | #5788DB | 0.030 |
| Deuteranopia (no green cones) | #4A7ED6 | 0.030 |
| Tritanopia (no blue cones) | #2C91A0 | 0.126 |
| Achromatopsia (no color) | #828282 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #657DD8
#657DD8
oklch(61.3% 0.14 270.7)
- #A18000
#A18000
oklch(61.4% 0.125 90.5)
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 #657DD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.036
- Cornflower #6A79F7 ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.051
- Cool Blue #4984B8 ΔE 0.065
- Windows Blue #3778BF ΔE 0.065
- Cornflower Blue #6495ED ΔE 0.065
- Chefchaouen Blue #4895EF ΔE 0.067
- Faded Blue #658CBB ΔE 0.067
Use #657DD8 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.