#657EF7
Closest named color: Cornflower (#6A79F7). oklch(63.5% 0.182 271.5), rgb(101, 126, 247).
Aa
Black text reads best on this color (5.88:1).
About this color
#657EF7 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.182 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.013 away. Black text reads best on it, at 5.88:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.88:1 |
| White text | 3.57:1 |
Values
| HEX | #657EF7 |
| RGB | rgb(101, 126, 247) |
| HSL | hsl(230, 90%, 68%) |
| OKLCH | oklch(63.5% 0.182 271.5) |
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 #657EF7 | 3.57:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #657EF7 | 5.88:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #657EF7 text on white | 3.57:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #657EF7 text on black | 5.88:1 | AA | Lc -38.7 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ACBEFB
oklch(81% 0.089 271.6)
-
Step 400
400
#8199F9
oklch(70.6% 0.143 271.7)
-
Step 500
500 (this color)
#657EF7
oklch(63.5% 0.182 271.5)
-
Step 600
600
#4D62E5
oklch(55.6% 0.199 271.5)
-
Step 700
700
#3F50C7
oklch(49.1% 0.185 271.6)
-
Step 800
800
#3443A1
oklch(42.8% 0.152 271.5)
-
Step 900
900
#2C3A7F
oklch(37.7% 0.117 271.1)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#657EF7 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) | #3E8EFB | 0.049 |
| Deuteranopia (no green cones) | #2181F4 | 0.055 |
| Tritanopia (no blue cones) | #009AAF | 0.158 |
| Achromatopsia (no color) | #878787 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #657EF7
#657EF7
oklch(63.5% 0.182 271.5)
- #A78700
#A78700
oklch(63.5% 0.13 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 #657EF7, closest first.
No curated palette has a color within ΔE 0.04 of #657EF7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.013
- Soft Blue #6488EA ΔE 0.034
- Medium Slate Blue #7B68EE ΔE 0.056
- Periwinkle #8E82FE ΔE 0.058
- Clear Blue #247AFD ΔE 0.059
- Lavender Blue #8B88F8 ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.060
- Dodger Blue #1E90FF ΔE 0.062
Use #657EF7 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.