#657AF0
Closest named color: Cornflower (#6A79F7). oklch(62.3% 0.177 272.6), rgb(101, 122, 240).
Aa
Black text reads best on this color (5.59:1).
About this color
#657AF0 is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.177 and its hue 273°. 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 5.59:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.59:1 |
| White text | 3.75:1 |
Values
| HEX | #657AF0 |
| RGB | rgb(101, 122, 240) |
| HSL | hsl(231, 82%, 67%) |
| OKLCH | oklch(62.3% 0.177 272.6) |
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 #657AF0 | 3.75:1 | AA large text | Lc -70.3 | Content text, not long reading |
| Black text on #657AF0 | 5.59:1 | AA | Lc 39.3 | Non-text elements, placeholder text |
| #657AF0 text on white | 3.75:1 | AA large text | Lc 64.8 | Content text, not long reading |
| #657AF0 text on black | 5.59:1 | AA | Lc -36.9 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBEF9
oklch(81% 0.086 271.9)
-
Step 400
400
#8499F7
oklch(70.7% 0.14 272.8)
-
Step 500
500 (this color)
#657AF0
oklch(62.3% 0.177 272.6)
-
Step 600
600
#5162E2
oklch(55.6% 0.194 272.7)
-
Step 700
700
#4250C4
oklch(49% 0.18 272.6)
-
Step 800
800
#36439E
oklch(42.7% 0.147 272.4)
-
Step 900
900
#2E3A7E
oklch(37.8% 0.115 272.2)
-
Step 950
950
#1B224A
oklch(27% 0.074 273)
#657AF0 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) | #3D8AF4 | 0.050 |
| Deuteranopia (no green cones) | #237EEE | 0.056 |
| Tritanopia (no blue cones) | #0095AA | 0.156 |
| Achromatopsia (no color) | #848484 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #657AF0
#657AF0
oklch(62.3% 0.177 272.6)
- #A28400
#A28400
oklch(62.3% 0.128 92.7)
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 #657AF0, closest first.
No curated palette has a color within ΔE 0.04 of #657AF0.
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 0.038
- Medium Slate Blue #7B68EE ΔE 0.048
- Clear Blue #247AFD ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.062
- Periwinkle #8E82FE ΔE 0.065
- Lavender Blue #8B88F8 ΔE 0.066
- Royal Blue #4169E1 ΔE 0.067
Use #657AF0 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.