#657BEE
Closest named color: Cornflower (#6A79F7). oklch(62.3% 0.173 272.3), rgb(101, 123, 238).
Aa
Black text reads best on this color (5.62:1).
About this color
#657BEE is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.173 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.016 away. Black text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.62:1 |
| White text | 3.73:1 |
Values
| HEX | #657BEE |
| RGB | rgb(101, 123, 238) |
| HSL | hsl(230, 80%, 66%) |
| OKLCH | oklch(62.3% 0.173 272.3) |
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 #657BEE | 3.73:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #657BEE | 5.62:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #657BEE text on white | 3.73:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #657BEE text on black | 5.62:1 | AA | Lc -37.0 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8F9
oklch(88.5% 0.047 272.1)
-
Step 300
300
#ADBEF8
oklch(80.9% 0.084 271.8)
-
Step 400
400
#849AF5
oklch(70.8% 0.136 272.2)
-
Step 500
500 (this color)
#657BEE
oklch(62.3% 0.173 272.3)
-
Step 600
600
#5163DF
oklch(55.5% 0.188 272.5)
-
Step 700
700
#4251C2
oklch(49% 0.176 272.4)
-
Step 800
800
#36439D
oklch(42.6% 0.146 272.4)
-
Step 900
900
#2E3A7D
oklch(37.7% 0.114 272.2)
-
Step 950
950
#1B2349
oklch(27.1% 0.071 272)
#657BEE 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) | #418AF2 | 0.047 |
| Deuteranopia (no green cones) | #2A7EEC | 0.053 |
| Tritanopia (no blue cones) | #0095A9 | 0.153 |
| Achromatopsia (no color) | #848484 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #657BEE
#657BEE
oklch(62.3% 0.173 272.3)
- #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 #657BEE, closest first.
No curated palette has a color within ΔE 0.04 of #657BEE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.016
- Soft Blue #6488EA ΔE 0.035
- Medium Slate Blue #7B68EE ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.059
- Clear Blue #247AFD ΔE 0.060
- Periwinkle #8E82FE ΔE 0.065
- Lavender Blue #8B88F8 ΔE 0.065
- Cornflower Blue #6495ED ΔE 0.068
Use #657BEE 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.